The articles about this tend to be misleading in that most computers failing the minimum requirements are failing the memory requirement not the TPM requirement, which is a lot less dire of a situation than having to replace your CPU since it is often much more straightforward to add RAM.
Presumably MS wants to do more things using toolkits that are more memory hungry.
" requirements are failing the memory requirement not the TPM requirement"
IT worker here, managing a ~400 computer install at the company I'm employed at. Laptops, desktops, some very old (10 years) and some relatively new(ish).
It's processor and TPM, not memory, in every single case of the nearly 150 computers I have to replace.
Presumably MS wants to do more things using toolkits that are more memory hungry.