They DO implement all the mobs every time.

No, they don't? Oh. You mean the modders. Then yes, yes they do.

But I wouldn’t go as far as to say Mojang is lazy.

If not lazy, I'd call them maliciously incompetent. Any modder can put out all three mobs in an afternoon. There's a bit of a greater expectation for a multibillion dollar company making hundreds of millions of dollars every year.

It's literally drumming up as much engagement as possible for the least amount of work you can get. How could you not call that "lazy?" What else would you call it?

You say that as if we don't want other people to enjoy the game that's there. It's not a difficult thing to sympathize that these mob votes are a needlessly frustrating thing.

Stardew Valley may have not implemented any DRM to check for ownership.