Those games had performance issues, but calling them "disasters" is disingenuous to the truth of the situation. Did you play Expedition 33? That was UE5 too.
The primate brain loves pattern-matching, so your primate brain has pattern-matched "engine game uses" to "performance of game". Reality is more nuanced than that.
To be fair, my only criticism of expedition 33 are the game poor performances. I understand in this case it's warranted, as the art also tells the story, but i had to buy a new GPU to play an AA game, which I usually never do.
The primate brain loves pattern-matching, so your primate brain has pattern-matched "engine game uses" to "performance of game". Reality is more nuanced than that.