The reputational risk involved in using their anticheat for that is pretty severe, and I can't imagine they'd make that much money by selling telemetry to advertisers compared to how much they make off Valorant itself.

At their scale it would also turn into one or more big class action lawsuits if they got caught trying it too, I expect. The lawyer fees would probably swamp any profits from selling telemetry data.

Murder is legal if it serves the powerful. Some goes with spyware.

Spyware is legal. As long as people who care about these things are a tiny minority, the law (and lawmakers) will never be compelled to change.

The best bet for those who play these games is to explore alternatives, or leave games altogether and socialize in the real world.