It's polarising (grey pants guy's style). I can say that the way he dances is currently very much in vogue in Europe, at least in tango marathons, and all those
affectations he does (left hand contortions, sticking his bum out in an attempt to maintain a lean, left upper arm at an almost 90 degree angle, opening and closing the embrace repeatedly, exaggeratedly dancing slowly, etc.) are sort of a marker of status, that he is one of the "in" crowd. I can guarantee you that plenty of followers will be looking at him to dance.
He's dancing way more to the rhythm than the melody, as you've noticed. Not my thing, but it's most dancers' choice because their musicality is quite basic, even if experienced. While the stomp-right-arm-jerk thing, as you've noticed, is technically interpreting the music just fine, he's exaggerating his movements for visual impact, and placing too much stress on the strong beats.
Maybe his follower enjoys it, but she's hanging on to him for dear life at some points, and it feels like they're not quite connected sometimes, given that she's struggling to catch up with him at those moments.
You'll notice that, in both cases (polka dot couple and grey pants couple), when they open up the embrace, they noticeably suffer a decrease in grace and smoothness; the transition is not that smooth either.
Here's
a post on what European and Argentine tango are like from one of the best social dancers in Europe, who is herself a professional.
I still consider both to be tango; but when there is already such a massive distinction, visually and otherwise, I find it way more helpful to distinguish between the two.