You have a good point, I could be very wrong about “permanent” being attached but for now “Social Leftism” is firmly controlling major political parties in the UK and other nations.
in the old days we would say that all governments and societies were like a pendulum and that when they swung too far in either direction they would reverse and go back to the other extreme, or at least approach the other. However the pendulum appears to be stuck on the left side.