They are doing this only to further exploit possibilities to monetize unethically, at the expense of both the games and the end users. Game engine should be a basic platform for devs to realise their visions, not do what malware would.
They only care about money, don't care about games nor players.
And anyone who believe it's "just for ads to better developer's income" is delusionally naive. Anyone defending it is a beneficiary (scammer).
Also, even if it's really only about ads, people are OK with a build-in advertisement system that collects your data all the time, without your consent???
Same vibe as "NFTs are there to protect content creator and provide them more income" - which is totally a lie, you get money thru NFT by scamming people dumber than you, not by integrity.