That's not the point either is making.
@Aldarc is talking about how it's a faulty and bad argument that the solution is "making things worse". Their point is that whole argument is just concern trolling to try and avoid having to do something.
@Vaalingrade 's point is that it wasn't that we suddenly learned these things were wrong, but rather that people talked about how these things were wrong and they were simply disregarded. It's not part of the same argumentation, and neither are talking about removing stuff from the past as much as fighting back against the idea that we are "moving too fast" or that "we didn't know better".
The whole point is that we
do know better, and what stopped people from moving in the past on these things are the same concern-trolling arguments that people are making now.