Over Two weeks ago and Still The VAR Controversy

Why is there still this "huge" controversy regarding the VAR decision to award West Ham the penalty against Man United?

https://sports.yahoo.com/howard-webb-admits-var-mistake-205000363.html

When there were atrocious decisions against West Ham in the past involving Man United it did not seem to be a big deal. Be it the ball going out of play on the sidelines and Pogba subsequently scoring, to steal the 3 points, or the abominable red card to Feghouli when he was the victim of that tackle from Phil Jones who did the roll on the ground theatrics. Then when memory served me right in the FA Cup from the past West Ham should have been awarded a penalty against Man United, but then the referee who waived it on, then awarded Man United a penalty for a similar tackle in the Hammers box. Was mind boggling then but no big deal to the pundits at that time. More recently against Chelsea, that goal by Cornet was overturned after Bowen was allegedly guilty of making contact with the Chelsea keeper. No contact in reality but that was water under the bridge after a 5 minute post match discussion. Another controversial red card was Balbuena after he cleared the ball and Chilwell ran into his outstretched foot. This and Feghouli's red cards were subsequently overturned.

But then no surprising when you watch Sky News and it is was all about Ten Haag after he was let go. To this day they keep on discussing it and the new appointee for hours on end. West Ham does get a mention when it is a reference to that controversial penalty!! When are they going to let bygones be bygones??