With his experience (and I agree if this is the case), he's probably expecting issues with unsupported configurations of Windows 11.
I guarantee that at some point after Windows 10 support drops that Microsoft will start pushing features that require TPM functionality. Maybe it will be minor at first, like you can't use PIN logins without it. Eventually it might move on to HTTPS requests failing without root certificates protected by a secure element store. Maybe OS updates will fail to install making these customized Windows 11 installs just as useless as Windows 10.
I've been a software developer for over a decade, and while I will never say always, usually unsupported configurations like this TPM workaround eventually fail. I wouldn't place my trust in it lasting.
I think so, especially if you enable gyroscope aiming!
It's a very playable experience!