According to WWE sources, the company will be banning Seth Rollins from using the curb stomp finishing move.WWE’s feeling about the move, which the WWE World Heavyweight Champion uses as his finisher, is that it’s too much of a direct liability and risk for a head injury. All of sports is trying to be more proactive when it comes to preventing head injuries and concussions, and this is the reason for WWE banning the curb stomp.
WWE reportedly doesn’t want its top star to be doing that move every night and they also don’t want to be showing it in past clips or videos anymore. This is why last week on RAW when Rollins came out, the video which played during his entrance was primarily just graphics of his name. The normal entrance video for Rollins features a compilation of clips, several of which are him performing the curb stomp.
Source: PWInsider
I think it's actually a good idea on their part. There isn't a single move that's "needed" in wrestling, and if anything it's going to add intrigue IF he does it once in a while. I also think it can be used in storylines like when The Undertaker's Hells Gate was banned, but the only difference is that the Curb Stomp in actually banned