Paid/private cheats are hard to keep track of but the free/open-source cheats are nearly all for Linux at this point, aside from the crude macro-based "cheats" which use AutoHotkey or similar. Apex enabled Linux support over two years ago so I wouldn't expect it to cause a recent uptick in cheating, it's been table stakes for a while.
Apex was released in the beginning of 2019, 5.5 years ago. It started to work on Linux over 3 years later.
You can easily find articles/videos from those pre-Linux days that talk about rampant cheating. Since Linux got introduced I have not seen any drastic changes to the worse, if anything it subjectively became better.
https://www.unknowncheats.me/forum/apex-legends/
Paid/private cheats are hard to keep track of but the free/open-source cheats are nearly all for Linux at this point, aside from the crude macro-based "cheats" which use AutoHotkey or similar. Apex enabled Linux support over two years ago so I wouldn't expect it to cause a recent uptick in cheating, it's been table stakes for a while.