The attempt to normalize a very unhealthy attitude about relationships and dating is so obvious.
I don't think their attitudes towards relationships and dating are unhealthy, or even unconventional. A lot of the quotes are saying be with somebody who gets your desire to be yourself, doesn't try to change you and who you feel good around. I think that's an incredibly uncontroversial attitude to relationships. It's their attitude towards their own (and their partners') identities that is different from normal for most of us.
We cannot or should not look to others to validate ourselves.
And yet almost all of us do, just not so much (noticeably) for our gender identities. Look at the AIBU board... lots of people seeking validation of their opinions.
External validation plays a huge role in teenager's development, (and is nothing new, it's just what and how explicitly they're asking to be validated that's different) and it never stops being a part of most if not all of our lives.
Psychiatrists and mental health professionals have noted extensively that extrinsic motivation and acceptance is not conducive to true happiness.
Yes. And a great many people struggle with it.
At its core, I believe the gender movement is based on individuals with deep identity disorders.
Perhaps. I don't know.
It's no wonder that most of these young people sound incredibly sad and with fairly grim outlooks on the future.
I'm puzzled as to why it sounds like they have grim outlooks on the future to you. Teen angst is a thing most of us do as part of our development, and most of us end up pretty who adjusted and functional. More than one poster here has said if they were in their teens now they'd probably identify like these kids as "other" in gender - I imagine I would have done too, (although quite exactly what I've no idea) and presumably must of us are fairly well adjusted and functional. They're doing it differently and they're doing it much more publicly than most of us because of social media and where society is at in general, but I don't see any reason to doubt got the future of many of the people quoted (the author from that tweet sounds vile and disturbed, absolutely).
@NeurotrashWarrior and @littlbrowndog I work with teens. I can assure you that these types of conversations and identities are absolutely alive at the moment.