Well, yeah that was probably expressed in a wrong manner. They were making money that's true, but let's say the expectation of the success was probably a bit higher. Just look at the new trilogy which is mostly regarded as bad now, doesn't have the merchandise sales as expected, etc. So the hype basically died down, besides some "classic" series like Mandalorian bringing back a bit of the former feeling.
RoP was hoping to get the old lotr crowd on board but also being criticized a lot and could have been much better based on the expectations.

So in that sense they maybe didn't flop, but weren't successful because the focus was on shoehorning in some characters instead writing good stories.

HotD at least tried to make a bit of sense with the recasting, while RoP as mentioned just placed tokens in every culture without explaining any further. I would have wanted for them to introduce these new people and races properly into the world. Maybe take the Haradrim who are a arabic-esque group but that obviously wouldn't be relevant for the American market. Here is has to be a black person to check that diversity box. But here we in the rest of the world don't really care. Do it right or not at all. And just placing a random black person into a medieval setting is just weird. Especially when these characters get no proper backstory. I think that's no real inclusion and I don't understand how people here see this criticism as racism instead of being vocal for these minorities to being protrayed with a little bit more respect.

But as said somewhere else in this thread, people don't even care and just want to insult.