Certainly as an overarching strategy, when one considers that others' opinions and reactions matter, this seems mostly suboptimal.

But in a variety of arenas (for me: amongst colleagues; with romantic partners; when making new friends) this can be extremely effective as an approximation for more ideal strategies such as "have confidence," "be consistent," and "demonstrate that you're having fun."

I'm pretty weird: when I first meet people I talk about the meaning of beauty in mathematics and problems with academic philosophy; I LARP and play pokemon and half of my T-shirts are references to obscure webcomics.

But when I teach, this gives me funny anecdotes to share with my students. When I date, this gives me confidence and happiness to share. When I study it gives me enthusiasm and keeps smart people interested in me.

So I would say, at the very least, try out the whole "be who you are, loudly and unapologetically" thing and see how it works. Maybe I live in a fantastic fantasy land but it often pays to try things out rather than countersignalling.