The Windows 10 bait n switch to Windows 11.
Hundreds of millions of PC users worldwide on old hardware using old Windows OSes were offered Win10 as free upgrade, with the promise that Win10 is the final Windows edition.
Later though, M$ announced Win11 and it would work only on new hardware (BIOS TPM 2.0 constraint), and Win10 is no longer being supported for personal use (except via some complicated ways to get an extension for the Win10 updates). And not only is Win11 buggy and full of ads, its performance is also bad.
Well, the good thing is that such shenanigans are pushing PC users to migrate to Linux.