It would be nice if Better Advancements will be avialable for Minecraft 1.16.4

Ah, will try to update this week

This is working fine in 1.16.4 Forge 35.0+, it is just the compatibility flag in Curse causing problems (at least for me).

Ported to 1.16.4, build should be up on CF soon. Commit 1bfa37e closes this issue.