Yeah I'd say it's not accurate to say it's the same anticheat. Only the same name. It's like saying Excel supports iPad. Except Excel on iPad doesn't support VBA, so any more complicated spreadsheet will not work.
I don't think cheaters are swarming to Linux, but part of the issue with Apex Legends is that Linux support is done through Proton, through the Windows version of the game, because there no Linux version of Apex Legends. So now you've got a backdoor for everyone on Windows to run the less secure anticheat.
Solvable maybe by having a separate Linux version of the game, but that's also more supported needed.
> Solvable maybe by having a separate Linux version of the game, but that's also more supported needed.
As someone who would play on Linux then, it doesn't sound like a solution at all. The separate version would just be filled with cheaters then, would almost be like an punishment for Linux users.