There's been absolutely loads of incidents as well mate since the Niasse/Lanzini
Martial diving against us was another one which resulted in a pen and yet no retrospective action was taken when it was clear as day he dived to win the pen
It's almost as if the FA have said to themselves "Hey, we haven't thought this retrospective diving stuff through, we can't just do the players from the smaller teams, let's just kick it into touch, but ban someone from a no mark team every blue moon to make it look like we're still on top of it"