“Progressive” has a whole bunch of meanings, but my favorite is the one that is supposed to mean, more or less, “liberal.”
Progress is completely subjective. It depends on where you are and where you’d like to be. Any time society changes in a way that makes it more appealing to you, you’re going to think it has made progress. Obviously. Progress toward the the thing you want. That’s why everyone likes progress.
The fact that we hear “liberal” and “progressive” used interchangeably is hilarious. It means that at some point in political history, liberal people just sort of collectively decided that from then on, their ideas would be called “progressive.” And despite the implicit slam on conservative (regressive?) ideas, they somehow tricked their conservative friends into saying it, too!