1. "Nobody playing this game is important enough to be spied upon."

It might surprise you to learn that some people in the military, congress, the DoD, and even important individuals in significant companies play video games.

2. "Some vulnerabilities exist, therefore any new vulnerabilities should be ignored or not discussed."

All vulnerabilities should be considered, especially new ones that will affect 10s or 100s of millions of people. That's why we're discussing it. Since you find it tedious, you're free not to participate.

But if we're talking about plausibility, then it's much more likely that your underlying operating system, regardless of vendor - Microsoft and Apple are the major players - has been compromised in some manner, or contains the hooks for on-demand compromise if compelled by a state actor.