Something I'm rather sad about is that highschool kinda beat that attitude out of me. I was a classic nerd, including all the bad attributes that label comes with, but also one really good one: I was really into a number of things. But I learned from hard experience that being super into stuff was lame - being disinterested and too cool for stuff was hip. I internalized that attitude.
Even into adulthood, I occasionally find myself making fun of people for being into specific things. I eventually made myself a rule: if someone really enjoys something that's not hurting anyone, that's an admirable trait. It's easy to obey this rule for things I like: science fiction, fancy beer, programming. It's not too hard to obey this rule for things that I'm not personally into, but are culturally adjacent to me: classical music, literature, skiing, fancy coffee. It's harder for things that are not as cool among my social group. I sometimes have to remind myself that being super into football, nascar, or the bachelorette is just as admirable as being into my things. Un-ironic enthusiasm is one of our best traits as humans, even when directed towards things I don't personally get that excited about.
And so I'll always appreciate that coffee friend. They're lucky enough to have maintained the ability to nerd out about something and I'm glad of it.