I mean, if it works for you, then cool. For me, not getting into hobbies and things for that kind of reason would have been the source of massive regret about my life in hindsight. I have always loved getting really interested in all sorts of things, but it's true that it's important to not have a hobby that consumes you to the extent that it's basically the basis of your whole identity, or having only one thing you talk about so you're "that guy". But most people can be enthusiast about various things and avoid that.

Irony/insincerity is a malaise of modern times. Being sincere about something leaves us vulnerable, open to attack. So we hide under successive layers of irony, until we ourselves aren't sure where our true beliefs lie.