I used to use several of those bugfix mods but I can't say I ever noticed any effect in the game, and I dumped them all after one of the previous updates. But I have a very light and conservative "vanilla plus" modlist (I have never exceeded 125 plugins with any version of the game). I typically have 2-3 crashes per year, so I wasn't using them to fix problems, but just for the idea of fixing bugs. People with heavy lists or who use mods that really push the engine might benefit.

Put shorter, if you have used it but don't really know if you need it, you probably don't. Any statement that it's absolutely necessary or that most mods require it is simply wrong.