The top part of the meme is actually a reason I like instances that don't defederate from other instances. It allows me to see what those I disagree with and/or just don't like might be saying/thinking at a certain period.
Hearing other perspectives doesn't make somebody an enlightened centrist, it makes them knowledgeable and more aware. There's nothing wrong with gathering perspective and context before judging something, that's what people should always do. It's a sign of wisdom, not ignorance. You would have to be mind numbingly ignorant to actually believe that being in echo chambers is a good thing.