AMD or NVidia?
Most games that I play work well on Linux with AMD. Most who have problems seem to have Nvidia. Anti-cheat stuff can be an exception though so best to ensure what you enjoy works.
If you can check hardware compatibility before hand, it helps. An up to date kernel like Fedora, OpenSuse TW or Arch can help. Wine recommends up to date kernel.
He used the word written by software. This is ambiguous and doesn't mean AI, for example, using annotations for variables and generating the getters and setters would count. Right click and create function body for interface function definitions also.
They're exaggerating to pretend their AI is more useful than it is.