Harsh comments on performance is one thing, but this is a bit over the line.
Even harsh comments on dress- if she had tied it to him needing to establish a brand for himself, and a suit just wasn’t distinctive enough, that could have been relevant. This style of rant would still be excessively aggressive to me, but it could have been relevant.
Seriously- even Simon Cowell, as much of an ass as he is, keeps his abuse to actual relevant things.
But she and her husband just went for the abuse. And got what was coming to them.