EA anticheat is a kernel level anticheat, which are generally bad for consumers due to them giving malware new targets to get full control of an infected system. Genshin Impact’s kernel anticheat is famously targeted by ransomware as an easier way to gain control of user’s PCs for example. They also don’t work on Linux, which is an obvious problem for Steam Deck users.
I don’t find it surprising that several of the main companies pushing for it (Riot and Mihoyo) are chinese owned. I don’t have any faith that a Chinese owned country won’t be required by the Chinese government to have some sort of backdoor in kernel anticheats.