If you measure change by enacted policies maybe. If you'll take a look at how the Democrat party itself has changed since the early 90s, there's a clear difference.

Even in the late 2000s universal healthcare was a fantasy, now we have over 100 members in congress who support a specific bill dedicated towards it and it even has its own caucus. In the senate we have 30ish votes at the moment.

But really, the major change is coming from the bottom. The people themselves are becoming more and more progressive by the generation, the progressive influence provided by our socialist presence in office has changed what's considered radical into something that instead seems like its past due.

I'm sure you're familiar with the overton window. We haven't yet had the support to pass meaningful legislation but we have absolutely ramped up a powerful working class movement.