The right wing of any political system is regressive

Yes, I completely agree. That’s what I’m saying. I don’t see how you can fix that other than universally disallowing the right wing of politics any influence over decision making, in which case the left will likely fracture in between its most left wing elements and it’s most centre-left elements and the process starts again.

So unless you want endless purging of whatever happens to be on the right wing of your political spectrum, I don’t see what the cure to Conservatism or the right wing is.