More like there was concerted effort way before Trump. Tea party movement ring bells anyone still and so on? At the time Trump wasn’t at all that much involved in politics and so on. He was still doing The Apprentice and so on.
Trump is just a figure head of way broader movement, not the planner or brains of the thing. He is just riding the wave, that already existed. Though I must admit might he is pretty decent fire and brimstone crowd pleaser and thus has probably driven some of the base to be more energetic and radical compared to situation where someone less “charismatic” was the lead candidate.
Aka FPTP wasting votes in most USA states since someone thought it great idea to issue electors as state size blocks. When Constitution gives each state right to decide ways of apportioning their awarded electors.
State starts awarding 3 democrat electors and 7 Republican electors and suddenly both parties care to entice voters to try to make it 2 and 8 or 4 and 6.
Doesn’t even take removing the electoral college. Just state deciding “state wide FPTP is stupid”, we are going to start using something more proportional.
Even in swing states it would still work, work better. Since there would be fight over is it 5 and 5 or 6 and 4.