Maybe simply lazy, and I will go search on the 'boxing match' thing. I recall, maybe it's 3 years ago now, that there was talk of a match-up along with various sarcastic commentary. Best guess, it was to be Trump vs Biden but with some of the bluster that celebrity (real) boxers exude, like in a big build-up before a Mike Tyson match. I'll do some checking (lazy, but shouldn't take long).
But as to the 'surrogate' thing, that gets into behavior dynamics, maybe 'projection' is the correct term. That would be, where there are issues, with one particular person, but there is a natural tendency to wish to extend the animus, to a wider circle.
For example, if you don't like 'John Smith' (sorry, John), but everyone also extends the criticism to his son. Thus to issue some criticism, to the surrogates, a person gets some gratification, in a way, as if the verbal shit-stirring had been direct.
So any instance of the person's son being present there can be a temptation to lay out some criticism or sarcasm that often sounds exactly as if directed towards John Smith.
Maybe the term I'm searching for is a 're-directed' criticism. I mean, in this case here, I do see the valid criticism, that Musk maybe inflates the project advantages, and downplays the project schedule delays.
That can appear to possibly not be a stand-alone perception, but rather, it leaves (an observer) wondering if there is a wish to lay guilty by association. Maybe not happening that way, in a particular instance, but after so many times, one begins to wonder, if some current, quickly issued snark (criticism) is a guilty by association thing....due to association with 'John Smith', who you, openly dislike.
That why I feel to issue the challenge, to just name 'John Smith' and quit the indirect, unclear use of some surrogate that associates with Mr. Smith.
Sometimes, in the workplace, folks wish to avoid trashing the boss, in the open. That's a natural protective behaviour. But, they often manage to express themselves, by way of some substitute 'target'.