Making fun of somebody for being passionate, or excited, or joyous about something is a really shitty thing to do.
Whilst it might give you a momentary hit of superiority over them, in the long-run they won’t think you’re cooler than them. They will just resent you and think of you as a dick and stop picking up the phone.
So that’s one thing not to do. But the other is to not go and do the same thing to yourself.
Joy is precious. Who cares what sparks it, so long as it gets sparked? Take it where it comes and it will grow. Fret over whether the source of your joy is appropriate, or cool, or trendy, and it will shrivel up and die.
Stop putting your fire out.