@kopper Bikeshedding is a part of the process. If some implementers don't like the proposal, it will not become standard, so we try to reach consensus.
In case of Emoji reactions FEP, it still describes current best practices. I'm not going to add anything that could harm interop.
>reacting with remote custom emoji is in a direly unspecified position that only manages to federate by sheer luck. since I believe you wrote up the custom emoji FEP you may want to take a look at that too
I was thinking about this recently and came to conclusion that reacting with remote custom emoji is totally okay. It doesn't seem to violate any written or unwritten authorization rules