Yeah this is bullshit. It's happening all over the place with both parties.

Here's the GOP Secretary of the State backing out of a debate in September - https://www.ctpublic.org/news/2022-09-15/secretary-of-the-state-debate-cancelled-after-republican-candidate-cites-unforeseen-circumstances

Here's the Fairfield and Greenwich GOPs saying that the League of Women Voters have majority Democratic members therefore they refused all efforts to debate, which is decidedly more pathetic than skipping a debate you never RSVP'd to - https://ctmirror.org/2022/09/25/league-of-women-voters-greenwich-local-candidate-debates-canceled/

And here's the League of Women Voters saying "we have not changed any of our bipartisan debate laws, y'all are fucked up for this one" - https://ctmirror.org/2022/10/03/lvw/

So, uh, yeah, it's not just Democrats.