The supporting quote doesn't actually say that. though. I could easily believe Butler did say it, but she didn't say it here.
She's absolutely right that gender is not an underlying essence or nature of which gendered behaviour is the product; it is a series of acts whose constant repetition creates the illusion that an underlying nature exists.
Gender is a performance that, due to routine, is often taken as a factual expression of the self.
Then she goes down the batshit route for which she's so renowned: She stressed, however, that individuals do not exist prior to or independently of the genders they “perform”.
Er, what the fuck?!? So your daughter, in the very first months of her life - and during gestation - before well-intentioned adults have had a chance to teach her the expected "girl" behaviours, did not exist 🤣🤣
Butler contended, somewhat paradoxically, that not only gender but sex itself—the fact of being biologically male or female—is “to some degree” a performative social construct. Sex is performatively constructed in the sense that it represents an essentially arbitrary distinction between individuals
She goes on to consider a norm of sexual desire based on an artificial association between biological sex and gender, which I would agree with in general, though not in Butler's sense of socially coerced sexual orientation.
Post-modernist philosophy's supposed to be a massive great thought experiment, designed to provoke questions about the nature of perceived reality and our personal roles in creating it. I'm still having difficulty coming to terms with the fact that the 21st Century has decided to take it all as a canonical statement of fact.
Its core question is "Are there any facts, actually?" so trying to build a society, legal structure, economy, political system, etc on post-modern philosophy is like trying to build a flyover on pillars made of fog. Idiots like the one you linked find it all magically mysterious, so they think it means everything is anything they want it to be.
Anyway, the tweet has 95 views and no likes 🤣