So, there are fans who are very upset by Simon's playing, and then there are others who try to downplay all the negatives, stiffness, etc.
We all understand that it's Steve's decision and that he probably won't change it, but we're all allowed to discuss it. I myself sit somewhere in the middle. I see some flaws, but on the other hand, I understand that this is the closing chapter for the band, and maybe they simply don't want to bring some big-name drummer into their ranks. They don't see the need for it.
Knowing that, I wish Simon luck and have slightly downgraded my expectations regarding the drumming. I don't expect Nicko's swing, flair, looseness, or that slightly jazzy, flamboyant feel he brought to the band.
But... I think that if there's persistent discontent with the drumming at a higher level within the band, that may be significant in some way. It could disturb the waters a little behind the curtains.
Again, I don't wish Simon any ill. He's in an unfortunate position, somewhat similar to the one Blaze was in. On the other hand, I would welcome more standout drumming - something a little less AC/DC-like, relatively speaking.