Just because something is a hobby doesn't preclude it from being something people treat seriously, in fact a hobby is more likely to be treated seriously by the people who enjoy it than something that isn't since it's something they pursue in their free time. Serious does not equal not having fun.
Nothing's wrong with treating a hobby seriously, neither is going at it with a silly manner, or any other manner*. There should be no expectation when going into a hobby aside from... finding if it is for you and if you do, how much free time you want to invest in it. *as long as it is not harming others...
If you have fun, and your hobby is bringing you joy/positive things in your life, that's what should matters. Whether you go at it seriously or silly... 🤷
I don't particularly like the implication that it's a fact that people who enjoy something are more likely to treat it seriously just because they invest a lot of their free time on it... I don't know... feels kind of shame-y for people who spend all their free time on a hobby but stay silly, you know? But I could just be overanalizing things again...













