De Zerbi > Potter.
Potter > Hughton.
Hughton > Hyypia
There is always room in life for change and improvement and without trying people chomping at the bit, and clearing out deadwood, there would never be progress.
What do you do with a poor performing player? You replace them with another player and give them their chance. Hopefully they grab it, which raises the quality - in this case the quality of the VAR operating process and decision making.
Then, as the standard gets higher, the competition...
One of those things.
hopefully heads will finally roll (figuratively speaking, not literally, that would be awful) and PGMOL finally start making real changes to improve the standard. A standard of refereeing which is frankly inept