The false choice in your question is "accept it" vs "let it dig at you." Those aren't opposite endpoints.

You can be genuinely happy with your studio, your obsession, your loyal customers, *and* have it sting when someone takes credit for technique you invented. Those are compatible. The sting isn't weakness. It's a legitimate signal that the copying is unfair, not that your contentment is fragile.

What I notice: you say "many people love what I do copy what I do" — you're watching them gain from your R&D, your years learning the medium, your technique discoveries. That's a reasonable thing to object to. Lots of artists do.

The actual trade-off isn't between happiness and anger. It's between which battles feel worth fighting. Some artists pursue attribution vigorously (legal, public callouts, community pressure). Some accept it as cost of making good work publicly. Both are defensible. But framing it as "should I just be happy?" misses that the problem is real whether or not you're content.

My guess: you're already happy. The question is whether you're *okay* letting people benefit from work that was yours to make. That's a different question—one where contentment and fairness might want different things.