This ^ is completely false, misleading and harmful dogma. People never trip when they meditate sober.
Psychedelic experiences are unique and can only be accessed by taking drugs. Meditating sober is a completely different kind of experience from intense psychedelic tripping.
In particular the 'bad trip' experience is impossible to trigger without drugs, this includes phenomena such as loss of control, terrifying panic-attack and psychotic mental dis-integration. Nobody ever has a bad trip when they meditate sober.
Meditating is calming and relaxing, intense tripping is the opposite of calming and relaxing. So it is pure self-deception to conflate these two utterly different experiences with each other.
They are not the same, I never said that - it's correct that it would be hard to have a bad trip from meditation although sensitive people might get a bit unhinged / lost if they go too far even with meditation - and have experiences associated with 'kundalini activation' which is also occasionally possible from other yogic practices. Not everyday casual meditation, but I guess if you go at it hardcore in an ashram until kingdom come, you may very well have slightly similar issues at some point. Still, conjecture on my part I admit.
It's not a scientific term by any means - kundalini -, but at the very least it's a very emotional activation and somatic effects can be extensive. I mention it because sometimes people do freak out from yogic practices, completely understimating what it can do to you. Call it what you will. You'd have to be very unstable for that or rather: unprepared to be really overwhelming, and even then it's mostly the emotional aspect, deep realizations about yourself from paying concentrated attention, and at most just losing sight of reality for a little bit feeling like your consciousness is expanded. Beyond that it would just be psychosis, I couldn't comment what could trigger that.
What definitely shouldn't be confused is that what makes the psychedelic experience unique is that it is a sped up catalyzed process, that also involves chemical distortion of the senses and not only the effects of sensory dissociation and prolonged concentration which gradually quells the mind. The fact that the unnatural (exogenous I mean) distortion acts on your senses with chems and that it happens relatively fast makes it relatively common for people to freak out and have a bad trip. With meditation it all happens so slowly that you couldn't really get too far in before you realize it, and you can stop the meditation at any time.
The mental effects of meditation will still linger, but won't keep stacking up. With a psychedelic you cannot quit a trip at the halfway point. But the manageability doesn't actually prove that they are fundamentally different in their potential in all meaningful ways.
This difference you mention is not unimportant, but you are seriously exaggerating your focus on that, interpreting what I said with many assumptions - pulling out of context because you are only comparing obvious trippiness, potential for freakouts (the name is no mistake it seems), and accessibility of the state. And you tell me that I am busying a dogma? Laughable.
What I was talking about was mysticism, which although historically often aided with psychoactives I'm sure, is not in it's origin just tripping. On the contrary, it's generally about profound and ineffable experiences, mainly the ones reached via trance, meditation, yogic practices (things that will always be more accessible than psychedelics since you need little more than your mind and some devotion) - many of which have a 'positive' / benign brainwashing action used as a tool to reach uniformity in the conscious mind so that for example the signal to noise ratio is adjusted enough to see what is normally hidden. The deeper unconscious, things that I guess would be called Jungian archetypes... the construct of the mind, including artifacts that show for example how our vision works. Normally we are oblivious to it because the mind is full of active dynamic content.
As far as mysticism goes, both psychedelics and meditation and other yogic practices can have similar potential. Don't tell me what is impossible - that I have experienced first hand - just because you apparently have never meditated for days on a retreat. Even intensive meditation for one day may not be enough - of course it depends how much you meditate each day but I would agree with that 3rd day / 4th day estimate mentioned earlier.
So for the topic at hand, the comparison is valid and experienced by myself and others. It's not to be conflated inappropriately but I never said there is no difference.
The biggest point of all is that while I think mysticism especially is a DIY thing and not a dogma/school thing where you tell others what truth has been revealed to you that is the one and only truth... gnosticism which iirc lies at the origin of much of catholicism and teachings by figures like meister Eckart are all about transformative experiences and they didn't all just trip balls to achieve it.
Sober, mystic practices can lead to transformative experiences. It would be sad and outrageous to think that you absolutely need psychedelics for it, even if they are VERY valuable allies and tools.