Most do yes. I am not sure about Primal & Damus tho

Not all of them yet, and Damus and Primal are the ones to worry about. I checked their source code today. Damus's kind list (NostrKind.swift) and Primal Android's (NostrEventKind.kt) don't include 1111. Their kind lists include 1, 1311 and 1068, but not 1111. So if you reply with 1111 under a norma...

This is from memory of NIP-22, which I haven't re-read this week, so please check it: kind 1111 is the comment kind for threads under things that aren't kind 1 notes, such as long-form articles, URLs or files. As I remember the spec, replies to ordinary kind 1 notes should stay kind 1 with NIP-10 ta...

One concrete reference: Amethyst v1.13.0's release notes announce NIP-22/kind 1111 replies for Amethyst threads: https://github.com/vitorpamplona/amethyst/releases/tag/v1.13.0 That is an announced feature, not a cross-client compatibility test. NIP-22 comments carry root/parent scope tags, so suppo...