If you look at how Trump ran on his Maga agenda in his early 2016 he had basically leftist policies he might deny it but thats how lot of dems cross voted for him instead of Clinton.
Sadly, no. He might have had more liberal policies but never leftists one and he definitely had far right and fascist ones already.
I agree that the left right spectrum is a problem, but the solution is not in this division, because there are real divisions in society and blurring them only create a pathway for oppression to live freely and unchecked. The point is to change the names, because the problem is not "right vs left" it's people who are idealist vs people who try to be materialist and in that sense, ethical.
Idealism creates a veil over society, a fantasmed vision of reality. It's ok in One Piece, but in the real world, it kills and destroy. We must never blur the lines between these two vision of the world.