Alright I'mma try approach this topic with a serious answer because I hang around on the internet enough that I've come across more than a few self-identified "incels" and I do know the exact type...
'Incels' are just awkward geeks who cant get laid because they're awkward geeks (I should know because I was one myself, way back in the mists of time before everything had to have a fuckin label). Most people grow out of it in time and realise that rather than being 'loveshy', they were just awkward geeks.
The first step in combatting this issue is admitting that the problem is within oneself rather than blaming life, the universe and everything. The next step is to stop frequenting social media groups that reinforce ones dorkishness and get out into real life. The next is realising that men have always had problems getting laid, it's by no means a modern phenomenon. Finally, obtain a personality (a healthy bank balance often works wonders as well..

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This man speaks truth. It really is as simple as that.
If you don't take ownership of your issues they will never be fixed. You can sit online all day and blame everyone else for everything that happens to you. You might feel better for five minutes. But your problems will still be there tomorrow.
So don't just sit there and wallow in self-pity, if you think you are too ugly and awkward to get a gf and that makes you depressed... fucking do something to change it! Here's a start. We have a saying on the internet that goes "do you even lift bro?"
The most important point of all is that frequenting forums, groups, chat rooms, whatever online community you use where you reinforce each other's misery is making you worse, not better. Stop that shit and instead look in the mirror and deal with your issues.
Even good looking women can be loveshy and dorky. It is a phase of life for everyone.
This is true. A common view amongst incels is that women can never have the same problems. Which is just bollox. Plenty of awkward girls with social anxiety etc out there.
Another thing to remember for 'incels', is that people develop at different rates. A frustrated 18 year old watching all his mates getting the action he craves, often finds that by his early 20s he has suddenly become 'hot' while his mates all have pot bellies and receding hairlines. Everything comes to he who waits...
Not to mention that everyone bullshits about how much they get laid when they're 16. Do people really keep believing that crap as adults?
tell that to the Japanese who are experiencing a whole generation who isn't marrying, partnering or reproducing. They must be all be awkward nerds with no money.
It doesn't really make sense to directly compare Western and Japanese cultures because they're totally different societies.
The problem in Japan, in a nutshell, is basically that there are traditionalist social expectations where the man is expected to work long hours to pay for not only his wife but also both their families. A significant proportion of men decide this is stupid and pointless so they just don't bother at all. This is why they are unmarried. It is not because they are incels who cannot find a gf, it is because the social expectations in their culture are stupidly high and they just decide not to play.
If you want to put an internet label on it, the Japanese guys you refer to are more MGTOW rather than incel.
But regardless what we call it, here's the thing... you probably don't live in Japan and nor do most people here. Most of us live in Western societies with much more liberal social dynamics. So the issues facing guys in Japan are not at all relevant to us.
Not hating on the Japanese don't get me wrong. I like Bape hoodies and Death Note. But if they wanna change the "herbivore men" they need wide scale social changes.