It's also potentially a infiltration vector for malicious activity.

Genshin impacts anti-cheat has been used to enable ransomware taking over windows computers, and you don't even need to have Genshin installed.

It was a danger to all windows users just by existing, because the ransomware just came with the genshin anti-cheat, which it would install on its own. Because it was a "verified" piece of software windows would just go "oh ok seems cool, go right ahead" and the ransomware would gain complete control of the system through the anti-cheat.