Tapping your helmet is disrespectful to the umpires and I have no issue if a player is tossed for it. Missing 22 calls out of around 300 pitches in any given game sounds pretty good.
The umps missed calls on the Cubs in game 3 too, including probably the out call at home plate that cost them at least a run.
Any Padres fan or player blaming that loss on the ump is a sore loser and should be blaming the Padres players for not hitting better. Funny they say nothing about the other 2 strikes on Xander that AB.
Having the K zone box on TV has had the benefit of keeping umps more accountable, but has also made fans and players complain even more for every ump that is as 100% perfect as a computer system. Umps are 10x more accurate than 20 years ago, there will never be a "Livan Hernandez" zone again, but people still won't stop complaining and won't give these guys a break, most of them are doing their best. The Padre who harassed that ump like a sore loser should be fined and given a soother to help his crying.