Maybe?
Other social:
"Everyone sees every reply! But we fiddle with the order!"
Mastodon:
"Not everyone sees every reply! But the order of posts that are seen, is guaranteed to be strictly reverse chronological!"
Different trade-offs inherent in the architecture of each.
I've posted on here before about how Mastodon's trade-off makes it much easier to racially abuse Black people in the replies, and puts more of the burden of reporting that abuse on victims rather than the community.