Yes, because abusing the spin really required a lot of skill.
Consistently blocking while violently moving your camera around is trickier than blocking while keeping your camera relatively steady. Sadly it's possible to build your character such that you can survive numerous blocking errors, but that's not really the fault of spin stabs.
Every change that reduces the number of viable options a player has in melee reduces the depth of melee combat, and decreases the skill gap between players. Considering the community is growing more skilled over time, this is the exact opposite of what should probably be happening.
Personally I would like new tricks and mechanics to be added for players to learn. Getting better at the game right now is mostly just a matter of polishing mechanics that you have already understood for well over a year. This is a lot less exciting than combat was a (long) while back, when people were still discovering new tricks and tactics.
I can't speak for other players, but for me the feeling of getting better and learning new things is what makes a multiplayer game fun. Reducing available options feels like the opposite of this.
