that guy has deleted his message, but I have a question / observation on this.. I think a lot of people like to ask Android questions here because they're here for the Kotlin chat, but they have an Android question and really there's nowhere else with quite so many Android developers active at any one time. I understand the suggestion is to try StackOverflow or other Android community forums but sometimes that kind of thing takes days for a response. I think people like asking on Slack because they can get a quick response. There is, AFAIK, no other Slack group of Android developers that has anywhere near this number of active users.
Anyway, just an observation.