Just to add to your otherwise comprehensive review-review, when Jim says
this is not in fact a new thing at all, and he's at least 5 years late to the party (but possibly longer, I can't really remember SSBB or SSB4). In Smash Ultimate, Peach's run animation is very clearly intended to give the impression of daintily lifting the front of her dress as she goes along. The hands don't actually make contact for gameplay reasons - picking up items would clip through and be obscured - but at the fairly wide angle you would normally see it you can't really tell.
(you be the judge, timestamp should be 1:20)
On the one hand I don't expect
every any game "journalist" to be on top of every small detail like this, but if a) you're going to make such a big deal about it, and b) the counter-evidence is in one of Nintendo's all time best selling games, maybe a tiny bit of research wouldn't go astray