I have a simple rule for life that can be applied to anything and anyone:
You can't gatekeep someone's existence
This rule applies to a wide range of identities and people, here, let's give a few examples;
Bi Lesbians are harmful beca-
You can't gatekeep someone's existence
Aspec people aren't LGBT+ becau-
You can't gatekeep someone's existence
A lesbian can't use he/him pronouns bec-
You can't gatekeep someone's existence
If someone says they're X but you don't like X so you try to undermine their identity or somehow call it "harmful" then you're the problem, it's hard enough trying to just exist while openly not a cishet white guy and if someone finds a label that fits it is not your job to tell that person that Um Akshually That Label Which Aligns With Your Lived Experience is harmful because blah blah blah, it is your job to say I'm happy you're figuring yourself out and then move on with your day.
The only "identities" that are harmful are bigoted ones that actively attack others, so basically only Super straight morons and terfs. anyone else, it's not your fuckin problem. If someone says the split attraction model helps them articulate their feelings and experiences even when not aspec, you don't get to be the final say in telling them they're not "allowed" to use it, I'll say it one more time for the people in the back:
You can't gatekeep someone's existence
Thanks for coming to my fuckin Ted talk if you have to bitch my inbox is open so I can easily block you have a nice day