Really soccer kicks to downed opponents before knees? I'd be down I just always heard the reverse order of things. Apparently people feel knees to downed opponents is less 'barbaric than kicks'.
If memory serves me correctly Dana white is pro knees to head, and upkicks but is anti soccer kicks and stomps and so is Joe Rogan. Or rather Rogan isn't anti soccer kicks but sees them as potentially too dangerous. Knees to the head tend to end fights quick and don't have potential to break a neck as much as a soccer kick apparently does. I remember watching a video on how a misplaced soccer kick from a pro soccer player at the neck could break a neck. Of course mma fighters aren't kicking with shoes on nor are they loading up 150% and running into the kick.
If anything they could make the rule which prevents anyone from doing a running start into the kick.