I had to do the same thing after 2004. My USB driver was gone! A lot of crap has happened since the incompetent idiots at MS were allowed to release 2004!! They should stop trying to improve what was working already.
Win10 2004 has/had a lot of problems, but this is not one of them. It is perfectly normal that a bigger update like this require drivers to be updated or reinstalled, the same goes for copy protection.
That has been that way since Windows 10 came to be.