Why wouldn't the sports books charge a % fee of the bet versus a flat fee?. Perhaps, cuz they don't want to lose the big wagers business? Mixed thoughts on the small parley player. When they see payouts , players may not care about 50 cents.
If one disagrees or agrees it now appears to be a rule if one taps helmet. Replay shows he first adjusted his helmet with was obviously ok. Rule was iniated to not show up umpire. Must be a history of this in baseball over the years, to now create a rule