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.
More work needs to be on the server side.
A ton of cheating can be stopped dead in it’s tracks if you spend some time filtering out data being sent to the clients, that have no business knowing about.