alethic

I expect them to be unimportant. This has been merged upstream and running on the flagship Mastodon instance for a little while now.

There is also a section related to performance available at the link I posted. Third header, "Likely Concerns", second subheader, "DoS/Amplification".

There is a detailed explanation available at the link I posted. Second header, "Approach".

This isn't correct. Mastodon merged fetch-all-replies in March. https://github.com/mastodon/mastodon/pull/32615

The only difference in visible replies is in the moderation choices of the server the post is viewed from.