Self-Sufficient Me fell into this category for me. Tons of very relaxing videos about growing fruit and vegetables at home… Then COVID hit and he started talking about “prepping” and “Doomsday” in every video. Didn’t work for me anymore after that.

There was another that I just remembered, Survival Lilly, who did survivalist and bushcraft videos. Again, lots of natural outdoor scenery and birdsong and just enjoying the weather and all that, but fell into a bunch of anxiety-inducing Doomsday prepper talk. Just looked her up now and she’s gone completely off the rails and is mostly putting out right-wing conspiracy stuff. Bummer.