I am not saying that there is no permanent symptoms or that there can be no permanent side-effects. I am saying that, given the current data, brain damage is highly unlikely. Consider that there are a vast number of other more likely explanations for the side-effects you see in people. If you're interested read a bit of research and form your own opinion. I am more debating what you are saying because you provide no basis other than personal experience for your claims than because I disagree with them
If we are talking from personal experience anyways, I'll tell you this: someone that is very close to me had a very very bad experience with spacecake about a year ago. It was pretty intense. She has been suffering from about 75% of the symptoms you commonly see on this forum as MDMA side-effects: severe derealization, panic attacks, tremors, brain fog, pins & needles, heart palpitations, flashbacks, mood swings, severe anxiety, visual distortions, hyper-awareness, in the beginning even brain zaps... She has been having these symptoms for a year, which is long enough for members on here to say "I think this is going to be permanent". So should I, based on that, say that weed is probably neurotoxic? No, the weed triggered a dormant panic disorder which is giving her all these symptoms. She has had these for about a year now and only recently is showing signs of improvement. But still there is no part of me that thinks "damn, she probably fried her brain". The mind is a very powerful thing and will fuck you up physically when it is in serious distress. The reason she is now showing signs of improvement? She has accepted that it is all a product of her mind and that it is not permanent. Instantly, improvement.
Brain damage does not heal, the damage really is permanent, yet so many people on here that supposedly fried their brain report feeling better with time and because of them getting on with their lives, worrying less about it. I'm not saying every case is like this but I am saying that a lot of them are. And I'm also saying that going around telling people that, without any basis, MDMA can cause brain damage, will make people start worrying, which is exactly what is causing their symptoms in the first place, worrying and panic