[Crinus]

People may say they love using Slack, but they certainly wont like their computers being slower and/or their laptop's batteries draining. And they wont blame Slack or any other Electron application for that, largely because they do not know why that happens! They'll blame their computer, perhaps Apple/Microsoft, their luck or whatever, but they do not have enough knowledge to judge Slack or any other misbehaving application unless the application makes it crystal clear that it is the reason.

It is up to the techies and developers to point out why that happens as they are the ones who have the necessary knowledge to figure out what is wrong. You cannot rely on users to figure out that stuff.