Yeah, it's really weirdly passive-aggressive and lame. Condescending is a good way to describe it.
I use Slack in a small 5-person company and generally dislike it. The desktop app is horrible. Why does a chat app need 400MB of RAM anyway? It also doesn't let me customize the font—or really much of anything—not a dealbreaker, but a bit annoying. So basically I use Slack in a browser, which is at least usable. Entirely and easily replaceable though.
I use Slack in a small 5-person company and generally dislike it. The desktop app is horrible. Why does a chat app need 400MB of RAM anyway? It also doesn't let me customize the font—or really much of anything—not a dealbreaker, but a bit annoying. So basically I use Slack in a browser, which is at least usable. Entirely and easily replaceable though.