Yes... not the only one though. Not a very obvious joke. Also, just checked slack on my Mac: 38MB memory usage, 4 open groups and many channels. So, not a good joke either?
Check the helpers, the main app is low, but it's likely over 1GB of RAM in use with the helpers.
Our team instance, 10 people, effectively idle (1000 messages/week, 99% direct). Client up for one day.
Mac: currently using 620MB
Windows: currently using 340MB
There is like 5+ Slack processes running at any one time. Knowing the efficiency of Slack 38MB is just the taskbar icon.
Want some more examples of the awesome that is the Slack desktop app? Have a single animated emoji on screen in a channel. Just visible in the currently active channel. The Slack app is using ~30% of the CPU in my 2016 MBP, even when it's in the background. I quiver at the thought of the awesome that will be available when Slack's valuation hits $20B.
Slack's memory usage is proportional to its valuation. What else would you use all those engineers for if not moar features?
On my Mac 2 groups, only a few channels using 1,440MB across 5 processes