@evan It depends how you interpret the platform. If you see it as a place for "microblogging," and archivability is important because you want your posts available for posterity, then yeah, searchability will be a priority for you.
I don't. I see it as a way to talk to friends, almost like a big global chat room. I have auto-delete enabled everywhere. I'm trans and assume hostility by default if someone is digging into my previous posts. If I find an infodump I want to reference in the future, I'll bookmark it. Search holds zero benefit for my usecase.