Since the sky always seems to be falling for some...
I'll just post this again. The rankings are not completely accurate to start with. Using the NFL as a measuring stick, a high % of 5* will be drafted. A significantly less portion of 4* are drafted- less than half. I stole this from a Clemson site and am open to corrections but this looks consistent with data I've seen before.
2017 NFL Draftees (252 Total)
5*****-----23-----9.1%
4****------76----30,2%
3***-------90----35.7%
2**--------25-----9.9%
NR---------38----15.1%
2018 NFL Draftees (252 Total)
5*****-----19-----7.3%
4****------70----27.5%
3***------106----41.6%
2**--------19-----7.s%
NR---------42----16.5%
In those two drafts, something something over 50% of former 5* players were drafted. I believe there are usually about 30-40 per class. It looks like roughly 20% of 4* recruits will be drafted. Obviously there are a ton of 3* players and so a fairly low % of draftees. But looking at it another way.... The recruiting services miss a lot of guys with the talent to play in the NFL. For whatever reason, most justified, they don't find about 60% of the kids in any given class that will develop into the best of the best.
This is all in a NORMAL year. The past year and a half has not been normal. The recruiting sites depend on a handful of things to award stars. One is credit for which coaches are pursuing them.
However... game videos, games watched, and football camps are the primary things used to rate players. A lot of kids didn't have a season last fall. There were few if any camps last summer. Lots of kids get A LOT better as their HS careers progress and the star wizards have no way of seeing it.
Star ratings should always be taken in perspective... and far more as influenced by Covid restrictions.