^^ Right, that's not a wrong judgment on your part
@Cleo1782, because that's what you know works for you. I think it depends upon the circumstances. In this instance, Dave has done a lot of unnecessary calling out of Alexa & Chris, in a harsh snark-filled manner. Dave just can't seem to help himself in that regard. His snarkfests and rants have been directed against a number of skaters at different moments over the years.
It was in a recent TSL broadcast that Dave was rather vicious toward Alexa chiefly re her online demeanor and toward both A&C generally regarding their troubles experienced at Worlds and Olympics. There is probably a special place in hell for those who enjoy piling on athletes when they are down. Of course as fans we all criticize and we all have our favorites, etc., but Dave too often takes harsh over-criticism to the extreme of personal pettiness. I try never to personalize my critiques, but to always keep it about what moves or doesn't move me about skaters' performances and their overall skills and areas where they need improvement.
Long story short, Dave was too negative and spiteful in his comments against Alexa especially. And now that A&C are training with Aliona, Dave seems to be trying to change his tune all of a sudden. Whereas before he was castigating them and making pronouncements about their career prospects, now he seems interested in sidling back toward being a huge fan of diva Alexa again. Dave is always name-dropping and wink-winking about what he knows. I think it's cool that Chris set Dave straight that he doesn't really know what he thinks he knows. It also serves as a slap-back message against Dave's petty nastiness. It was not overdone on Chris' part. It was a humorous, subtle yet well-targeted slap-back.
I'm sure Alexa & Chris are too busy working hard to bother wasting their energy on any kind of sustained and unnecessary Twitter fighting. But the well-aimed slap-back with perfect gif is always apropos.

@skatemoivo (MTran) and GGold are quite good at the subtle, and not-so-subtle, humorous Twitter tweaks as well. And I loves me some AdaRipp and some Charlie White setting things straight and telling it like it is, without losing a beat! No sweat!
ETA:

In the comments section below Chris' tweet, this reply to a whining fan concerned about A&C working hard to land their jumps, is also hilarious:
ChrisKnierim
You’re a fan obviously. We are working hard don’t you worry. Fortunately for me I have breaks in the day to do things like eat, sleep, brush my teeth and tweet.
[Chris' above tweet was accompanied by a gif of a cat doing rolling backflips

Alexa is a cat-lover

]