Those who actually push for regression are scary. But they don't truly push for regression, they push for a cherry picked and misremembered version of the past. And the bits they would like to keep vs rollback are different from how I would choose. But a lot of the elements of what we have now are not improvements on the past and I think we need to figure out how to undo some of the damage we've done.
And I think part of the reason we have so many scary regressive people is because they feel the ways that the world has gotten worse, even if they misdiagnose it.
There is also a large audience for outage of any sort. If you have a message of "people who believe X are idiots" you've got a big audience: all the people who disagree with X love to hear you elaborate all the ways the X people are idiots and thereby feel smart and smug and righteous.
The audience of X believers who might listen to a message of "hey, here's why X isn't quite right" is a harder sell. For one thing most people are not looking to hear how some view of theirs is wrong, and even worse, in this polarized environment all the people making hay off of "X believers are idiots" are helping inoculate the X believers against that message.