Trump is implementing multi decade right wing fantasies in many fronts. The idea that we can't achieve anything is limiting yourself when you're in a political arena. To win, like Trump, when you get power you have to attack on many fronts, cultural, capital, legal, and approach it as a zero sum scorched earth war where norms are another obstacle in your way.
Right, the definition should reflect general usage. Did the general usage here just coincidentally change days after a Republican appointee used a word in a hearing? That’s a heck of a coincidence! No, what happened was that liberals used their control over putatively neutral institutions like M-W to advance their position in a political dispute.