I think the thing with a lot of artists these days, especially a lot of the ones who sell prints and digital artwork is that they sacrifice a bit of their own originality for the
aesthetics
and trends, so they're more marketable and "in with the times" - hence the influx of earth tones and cottage core influenced artists. However, if one is truly an artist, you can always distinguish distinct details that separate them from the rest, however similar their theme is with others. You always have a trademarked, distinct style that comes out regardless of the subject & theme. Monika and Nina, despite falling under the same color story and theme as hundreds of other artists, have very recognizable drawing signatures and quirks. I don't necessarily think art like that is mediocre, as I know how much work it takes to produce even the littlest of sketches to a certain standard, I just think that artists follow a certain theme to sell more and appeal to the masses so to speak, especially those financially struggling and relying on their craft to earn. I have observed this in fashion illustration as well (my line of work), and that's with sketching on actual paper and not digitally. You'll know when one has a tendency to copy from or be too inspired with other art pieces because they never have a distinct drawing style and technique (
cough Gabby), this includes the strokes and how heavy handed they are and your method of rendering etc. I don't even know if i'm making any sense
just wanted to put my 2 cents in as someone from the art industry.