It’s not exactly baseless speculation. People have things to base their guesses on.
A non-trivial component to this election was this constant, smug nagging. "We know better, you're all so stupid".
If you turn out to be right, enjoy your smug "I told you so", but until then - these views are a minority and are very tiring to constantly see/hear/read.
We've been hearing how doomed democracy is for the better part of 10 years now. It's really old...
Maybe you're just really tired of hearing any criticism of blatant corruption and I'm sorry you're feeling that way. I bet that feels really discouraging and tedious and adversarial.
To me this comment reads as a callout of corruption, not fascism. The hitler criticisms you mentioned, in my experience, have been for things like the maga hats with the nazi font, the republican convention stage in the shape of the SS glyph, and the claim that immigrants are watering down the proper American bloodlines.
To your other request that people stop sharing their concerns: just because a lot of people vote for something doesn't mean it's inherently ethical nor does it mean people should be silenced. My assumption is most people don't want corruption or abuse or racism or fascism; if you think that too then you might have better success helping people understand why they are mistaken about what looks like corruption instead of telling people to just stop sharing opinions you're personally tired of reading.