Also a great filter from the other side.

I was not hired once because I didn't have React experience, despite having years of both Vue and Angular and having led teams building non-trivial apps in both. IME focusing on such a minor detail like that means either a) you're going to be so pressured to get stuff out of the door they can't handle slightly lower productivity for a month while you learn the different syntax, and/or b) the person hiring you isn't technical enough to know this is a minor detail.

Either way, better off somewhere else :)

I landed my first software job when I was 18 years old. I didn't have a degree or any professional experience in their tech stack, and the recruiter told me later that I was hired because of "my passion for Legos and foreign languages" (I was learning Swahili at the time, and one of my interviewers happened to be a former volunteer in the Peace Corps, who conducted most of the interview in Swahili).

I had a great experience at that company while I was in college, which also launched me into an exciting professional career. All of it wouldn't have happened without people like you.