Sorry, no its not. You clearly have not actually encountered or dealt with these pathetic losers if you believe such and frankly you're incredibly ignorant for positing such (as that's their central claim, that society has conspired to keep them from ever getting laid, everything is always society's fault never theirs at all; they used to blame it on them being into comic books, video games, or anime, but since those all have gone fairly mainstream and are quite popular with women, they've then started glombing onto right wing conspiracy garbage since people like Milo saw how exploitable and stupid they are - he used to constantly trash them and make fun of them, but then he saw he could fleece money from them by whipping them into a furor over girls getting into their "nerdy" interests making it so they can't excuse their pathetic inability to connect with other human beings on them not being into things that they viewed society as being weird).
Yes their ideas do exist in isolation, because the fucking morons isolated themselves to piss and moan that they can't get women to fuck them because they choose to be intentionally stunted human beings. Society did not create these fucking limpdick pieces of shit. Society did not create this mentality, they did on their own.
These people didn't pop up out of conservative culture. Right wing ideology used to trash these people all the fucking time, until they saw them as a group that they could exploit for their culture war against women and liberals. In the past these people would've been on the fringes of other fringe culture (hell they still are, now they're just glombing onto fringe extremist right wing groups looking for others to exploit, pad their numbers, and get them to do their dirty work; these right wing groups do not give a shit about them at all, and view them as subhuman people, but they're useful for demonizing others and so see its really women and liberals to blame for them being pathetic losers), where they'd leverage the outcast role to justify their impotent rage, while most of the rest of the people of those groups would mature and change, further increasing incel's blame of society as they'd claim they were left behind, when, and I can't keep stressing this enough, they're actively choosing to be.
Its not even really a sex thing, despite how they're so focused on it. Kinda like how a lot of sexual assault (especially with minors) isn't about sexual gratification but rather having power. Incels think they're some divine beings stuck in some hell. When its their own doing. And they use anything and everything they can about society to justify their feeling, and they'll adapt their claims to societal issues (which is why they focused on sex as there was a lot of talk about how sexualization in society is causing problems - but that was being said by both right and left wing groups, with right wingers wanting to pretend that sexuality isn't a thing and left wing trying to make it more accepted but healthier too), when that's not the actual problem. They're just using it to rationalize their despicable beliefs and behavior. That changes over time (incels are people that will glomb onto other groups but intentionally be miserable assholes to force people to shun them so they can go back to believing they're some super unique person that society can't handle). That just happens to perfectly align with modern right wing ideology who literally flipped almost overnight in how they approached them (I'm not kidding, it really was like one day they trashed them, then the next they started pointing to them as victims of feminism and other bullshit, which of course the incels will eat up even though they know these new groups don't accept them any more than the old ones do, but these groups are doing everything they can to justify incels' hate, giving them purpose where before they'd only be able to be hopeless losers). But incels were around before (the internet has given them a voice, and led to them recruiting more young people that otherwise normally would've probably been typical outcast - punk, goth, geek, emo, metalhead, etc) and they'll be around after the right wing dumps them.