I just wanted to hear what people had to say to be honest. Given the success of Slack, is it really that bad? Why has no resource "friendly" alternatives taken its place?
Because people used to be able to use whatever IRC client they wanted for Slack, so it wasn't a problem if they were too memory constrained. In a pure embrace, extend, extinguish fashion, Slack closed the gateway that made them popular and now everyone is stuck with their pile of crap app.
Most users can afford one resource hog even if battery life and performance decrease.
We can't afford a whole list of apps all hogging resources simultaneously.