Not specific to one faction. It's a local maximum, so all sides will adopt this strategy unless the environment or rules change.
My 2¢ on why "slam" specifically:
1. It's a super short word, which matters in headlines and tweets. I think this is also why headlines will "quote" a word or two (the quotes are magic symbol to ward against libel).
2. Our monkey brains are aroused by violence and tribal warfare, even when that violence is described second-hand and is figurative.
Aggressive verbs are certainly inflammatory, and certainly increases clicks and engagement (at the cost of societal cohesion and individual contentment).
Mark my words—future headlines will be even more outrageous as we become inured to (and accepting of) the current patterns:
"AOC Jr 'eviscerates' Will Clinton over proposed lunar sale to China."
"Don Trump VI 'rapes' UN Fusion Program's budget to pay for July 4 parade."