Besides the minimum processor requirements like TPM 2.0 MS also eliminated processors based upon performance and reliability issues. Drawing a line in the sand was a decision they made. While you can try and install Win11 on an unsupported machine do be aware it is unsupported and may not work in the future. It is a risk you elect to take.
Personally I don't think that Win11 is worth the upgrade at this point. There are too many things that are just not really ready for prime time over Win10. Irrelevant this forum isn't where you request that processors be added to the supported list. You'd need to use the feedback tool in Windows for that I believe.