I think I finally have some words for my feelings regarding the "none of us knows what we're doing, we're all just trying to suck less" perspective.
Saying specifically that thing is "nice" but not "kind." It is achieving good feelings and psychological safety by way of deception.
I remain hopeful that we can be welcoming to beginners and avoid gatekeeping, while still acknowledging that there *is* actually a lot of accumulated knowledge and wisdom that is beneficial to learn.