The only thing the average consumer will even notice is the end of support for Windows 10. However, once the prompt to upgrade to Windows 11 appears, 99% will click "yes" and forget about it. They might be a little annoyed by the changes, but that will be all.
Nobody will notice end of support for Windows 10. Why would they? Nobody noticed end of support for Windows 7, either, and it's still up and running in many places where it really shouldn't.
End users don't give a crap about security updates and as long as users don't bump into a lack of third party driver they won't even notice a difference. And yeah, like every other time they will eventually update to the current version once more practical issues crop up. 10 to 11 isn't even close to the harshest upgrade path MS has deployed.
That's slowly changing though, as the enschittification of windows continues. They may not care to know about the details, but all of those points do fall under the "it just works" catagory. And they do care about that.
I agree. However if you look through the other comments in here, you'll see a LOT more examples of stuff that fall into the "it just doesn't work" category instead. And most of them are a lot more obvious to casual / new users. Those would be the ones that really require priority if Linux is ever to become mainstream.