neowin[.]net/news/playing-valorant-on-windows-11-requires-tpm-20-and-secure-boot/
From a quick Google, it seems the only games using Vanguard are Valorant & Call of Duty: Warzone -- no idea if others will adopt it or something similar. Allegedly TPM & Secure Boot would make it harder to bypass Hardware ID-based bans. *In theory* it should work with Win11 on PCs/laptops that are not officially qualified for Win11 because of the CPU, but do have TPM & Secure Boot, both of which have been common for years -- the biggest sticking point for most hardware is Microsoft limiting CPUs to just the last couple of generations. OTOH, if this sort of thing becomes common, that could keep gamers on older hardware on Win10.