I agree it could be immature if passion for music means going dancing to clubs or drunk throwing ones underwear at the band in a local pub LOL but many people are passionate about music because they professionally play 5 different instruments or are opera singers (examples).

I think many people claim to be passionate about music because they listen to it. I find it “passive”. Those musicians are passionate about their music because they play and you are just passionate listening to them? But you can only find out by talking to people what they mean by passionate. I think maybe passionate is too strong of a word and it throws you off.

PS I wouldn’t judge people on having passions. I am passionate about art (i exhibit in local and regional art show and have art Education, art means ton
To me ), Education and children (over 25 years of teaching and raised my own), literature (I have a degree in it and I constantly read enormous amount of literature in3 languages) and travel (I’ve been to 20 countries-some way more than once, in some like 10 times, and 20 states again many more than once- and I haven’t lived in the US my whole life so it’s a lot).

So my passions are legit. None of it makes me a bad partner or a crazy immature person. You can’t assume that people will be bad partners because they have “passions”. You just got to talk to them to find out