It also leads to not suspending a really dirty play for long enough with the "well, he hasn't been suspended for X number of months, so we can't just throw a 10 game suspension at him now" excuse.
I remember that was the excuse of the DoPS for Wilson a while back when he finally did something that warranted a multi-game suspension. They cited his lack of suspensions prior as a reason for only X amount of games rather than Y, not realizing that the reason he hadn't had suspensions is BECAUSE they were so soft on his dirty plays prior to that.
Look at Trouba now. Because this only resulted in a fine, then his next dirty act will be his "first" dirty act according to the DoPS.