I’ll chime in and say yes, it’s important, especially if you plan on moving onto playing with a lot of different bands on a quest to becoming a working professional. But if you’re not sure where you want to end up, I wouldn’t get too stressed from everyone making it sound like you “must or else”. It’s music and an art and everybody finds their way through it however they want to do it. So figure out what you want to be and do as a drummer and find the path that gets you there.
Personally, it turns me off when I meet people who tell me “YOU MUST DO THIS OR ELSE I’LL SPANK YOU” - especially when they’re assuming I’m just like them (yeah, ain’t that arrogant?). You can do what you want - just have fun with it. I can’t tell you how many failed musicians I’ve met who quit because others forced them into thinking they must do things. It’s a shame.