> however the 4.x stuff is definitely out of support [...] Sorry, I did not know they had actually brought non-Core ASP.NET forward into 5.0+
None of this is true, you've gotten yourself very confused. The only real change with .NET 5 was the "Core" name being dropped and the Mono runtime being merged in. .NET Framework 4.x is still around and is still fully supported for legacy applications.
None of this is true, you've gotten yourself very confused. The only real change with .NET 5 was the "Core" name being dropped and the Mono runtime being merged in. .NET Framework 4.x is still around and is still fully supported for legacy applications.