I will say, 100% getting a response (even if it's not really anything of substance beyond learning when I might expect a response and that their cohort is going to be around what it's been in past cycles) from another program that I'd applied to helped to take the sting out of the Northwestern rejection. A lot of professors themselves just weren't taking graduate students this cycle based on the guidance on the department website, so that might have been the source of what your POIs said in the first place.
Definitely with you on the anxiety factor. I'm older than most traditional potential PhD candidates and I'm switching my research interests from what they were when I was getting my MA (which had some trauma attached to it in the first place, as my thesis advisor died literally in the middle of my project--too deep into research to change gears but not 100% done, either), in part because I've matured as a researcher and scholar since then. I'm worried that will be a point of difficulty but my professors have assured me that I've explained that in my SoP so it should be okay.