So my first guess is that she(/they) wants people to alternate between "she" and "they". Is that some unspoken rules when someone has several pronouns listed? Does it only apply to non-binary people? Is this something she made up just now?
There are no rules beyond treat people how they ask you to treat them. Someone might prefer "they" but be just okay with "he" or "she." Some people really don't care. Some people don't really know what they want or how to ask something of others or are just straining against the bonds of language itself.
Sometimes people have binary/they because they've learned that nobody will ever call them they so they just kinda stopped trying
lmao its me, the clown who uses he/they/it despite hating masc pronouns because ppl are gonna call me a he anyways :agony-deep:
Nobody will call me they ever because while they at least kind if binary trans folks where I live itll take another 50 years of activism to make people accept nonbinary people
If you talk to nonbinary people this is something a lot of us have expressed. It really isn't hard to use both and the person telling other people their pronouns is obvs okay with whatever they chose for themselves so there's no harm in switching it up sometimes.
Isn't using "they" kinda like implicitly saying "you don't pass" or "your gender isn't obvious"?
Using someone's preferred pronouns is respecting their preferred pronouns. They wouldn't choose them if it made them uncomfortable