Definitely. The Overton window on Reddit is tightly managed. Anything outside of it is shadow banned at admin level and whatever is inside is amplified by bot comments. Been going on for years.
source? What's the range of the supposed overton window?
There may be biases from supermods, and that's an issue, but there's dozens of examples of diametrically opposed subreddits with thriving communities.
Very little has changed on Reddit since the protests. A few tight knit communities went to discord. But tons of people loooove to complain.