I think it's groupthink and recency bias: we're constantly barraged with the adverse impacts from climate change (please, I believe in it, and I'm not denying it, so lay down your pitchfork; plus, destructive weather events get clicks and eyeballs), we see it in longer summers and milder winters, so anything that isn't brutal cold and consistent snow around here is easily mentally connected. We seem to act like we all live in some snowless hellscape.
Add that to some recent dull winters, anything that continues pleasant late autumn days make us all sound like boomers and talk of back in my day. (apologies to the boomers on the thread)