If you look around various places on the Internet, it appears that the situation regarding Windows 11 may actually be worse than we're thinking at the moment.
Apparently, Microsoft published a Windows 11 compatibility checker tool, since removed from their websites that says that not only the things that have been mentioned are required, but also says that you need an Intel 8th generation Core, or AMD Ryzen 3 processor to run Windows 11, and this all looks a bit like an arbitrary decision on Microsoft's part. There's been a lot of speculation about why this is, but my guess is that they want to avoid processors with the secure enclave vulnerabilities, which have only been fixed in the most recent Intel silicon. GaryExplains on Youtube (https://www.youtube.com/watch?v=qrH4zEBmztc) has a good video of his experiences with the tool and the systems he tried it on.
It is still quite possible to buy systems with 7th generation Core or Ryzen2 processors, or even the processors themselves as upgrades to older systems, so I think this will cause all sorts of barriers for people with recently purchased kit as well.
You cannot rely on whether the insider pre-release versions run on your hardware to be an indicator. These builds no not enforce the requirements that the production build will have.