Yes, I know that. I have an Ivy Bridge system next to my retro Macs that dual boots XP with 11 in BIOS/MBR mode (so wildly further away from the supported list). Have had lots of other unsupported 11 systems of various vintages.But the MS installer is really easy to bypass because of the way MS created the installation software.
But at the end of the day, I'm happy enough to take the risk of running 11 unsupported on my home systems, but I would never suggest that for a family member, work, or anybody else. It's like OCLP. Would you give your mother-in-law or your boss a Mac running OCLP?