It's odd. Bailly has a higher rating, but Smalling was comfortably better and had the greater impact today.
it's absolutely normal, few named him also MOTM, which only sums up how much are ppl biased towards new flavours as new additions to the squad. Mhkitaryan is now world class after few games and so is Pogba after that run of great games. Players from the past from the bad spells under LVG or Moyes are given so much stick it's incredible sometimes, very hard to convince some ppl to change their minds...
tbh it took me quite long to change mind on Blind the other way around too, he's now for me pretty decent back up option for several positions. I rate Micky and Martial very high too but they need to maintain their bottom high enough to get my praise otherwise I'll be littel disappointed because of the extreme hype about them at the beginning and just before their Manchester career. The same goes for Pogba who is no doubt a world class talent but it is clear that English league is compelteley different level than palying for the by far the best team in the country... etc.
back to Mike, hope he stays fit and confident and gets to his best than, he's undroppable, Bailly has a lot to learn next to him, shame on Rojo but he will be only a back up after Smalling and Bailly hit the form and make a good pairing, Jones will always be injured and when he comes back he will be a good back up option with Marcos as a CB...