Best I can tell the article only decries the deprecation of x86-64-v2 in RHEL, and says that for that reason Alma is not a viable solution...

Buuuut here is the fix: http://mirror.grid.uchicago.edu/pub/linux/alma/10.2/isos/x86... There's you Alma installer with support for the processors they use, and you can even install EPEL packages built for x86-64-v2 on Alma as well!

So...I agree with the user above, what stops what I must imagine would be a simpler switch from RHEL to Alma instead of Debian?