Being a kotlin slack, it makes sense that we want all questions to be kotlin related, but I think so many people have found help in this community that it's become "trustworthy" (way more so than that androidunited slack) and because of that it makes sense why people post non-kotlin android questions here.
I wish there was an "official" android slack. android-dev irc was fun when there were framework people hanging out. Maybe to "fight" this for now we rename the channel android-kotlin or something?