Good question, and I guess all answers are subjective.
In my view Covid has massively helped the likes of Norwich, Watford and Bournemouth. Normally when a team drops out of the PL they get asset stripped of their best players for various reasons. This season it did not happen and by and large they kept most of their players. The result is the table that we look at now.
Crowds, or lack of, have certainly had an impact also. Just citing our last 2 matches, there is no way, with 20,000+ City fans at the CCS that Forest would have felt so comfortable....and equally our players felt they could just go through the motions. Our vociferous support would not have allowed it. Equally v Sheff Wed, they have decent crowds and the nervousness of the home fans would have fed to the home team and the outcome may have been completely different.
I still believe that the Championship is still the best League in the world, still totally unpredictable. I much prefer it to the PL where it is more or less broken into 3 tiers of 6-7 teams.