That's the difficulty atm with no clear and concise information being released by MSFT...
On one hand, the CPU requirements could be seen as being a blocker from being able to install Windows 11 at all.
But on the other hand, no one from Microsoft has categorically said anything other than unsupported, this could mean that you could install Windows 11, but at your own risk, and MSFT will not help you in any supportability if things went sideways with your installation.
The only clear thing so far is that MSFT needs to put out a better set of guidelines and information that leaves no ambiguity to almost anyone with queries about the upgrade path to 11.
Just how I see and read things so far, and I'm sure there are a ton more opinions and understanding out there, just because MSFT left it so poorly documented.