But these are scenarios, which happen, could be considered an attack on the network, as they were trying to take advantage of a protocol for their own purposes, damaging this entire protocol.
What you're describing is a miner centralization problem and it has been an existential threat since the birth of the first mining pool.
This is also true. But if we give it more tools, it gets worse.
But other scenarios can be constructed, how Ordinals can be used to try to harm Bitcoin. Now, that would be pure and mere speculation, which is not worth feeding into.
I just think that the first layer of the blockchain shouldn't be dealing with this type of content. I'm not against Ordinals, I just think they're operating in the wrong place.