I mean if you want to focus on original stuff, then focus on original stuff. Speaking as someone who has slaved away making hollow fanart for years--you don't want to get burned out on the art memes and the fanart. Like I am personally so burned by it haha so I've just been doing original stuff right now and that's been really freeing and my followers are fine with it. I'm fine with it. I'm honestly at peace with my follower count right now, because it's a different job entirely to be a social media star than it is to be an artist. It's a full time job to be an influencer. You just don't have time to do it usaully, and so it's OK if your numbers aren't that of an influencer.
So I feel like dedicated fans are what happens when you're busy trying to do something else. When you're busy trying to improve your skills so your stories look better. Because when we do memey stuff that helps gain followers, it isn't necessarily related to the artist we eventually want to be. If I were to do an animatic, for instance--yes it would get a lot of notes, but it's unrelated to my long term goals. If I did a lot of fanart--it COULD be related, if I made it match the type of jobs I want eventually. So when choosing trends to draw (because that can be a great way to get followers, I don't want to make it sound like you should never do fanart because it can still be a great tool), make sure that it's true to what you want to do, and then it won't feel hollow. It won't feel like such a chore.
But when I do all sorts of art in many directions, it confuses my audience. When I'm chasing that meme or chasing that new platform and just throwing art at the wall (and I did daily art for over a year and let me tell you...it didn't matter. Algorithm didn't care) my viewers can tell that I've lost focus, and I lose followers.
So I think focus is really key to not only your own growth as an artist and who you want to be, but also as a way to make a fun and inviting social media page for your followers.