There's an obvious answer if they want an open source container experience that works great (at least the container part, not the desktop part): run it on Linux. To slam a Mac only product that by most accounts runs well, and quite a bit better than its competitors, just because it's not Open Source is disgusting.
I wish I had as few problems in my life as you because I would never consider saying "I'm not using this because it's not open source" to be "slamming" or "disgusting".
The quote was to be exact: "Into the trash it goes". A cheap dismissal for arguably nonsensical reasons given that it's closed software specifically for a closed OS.
And let me add that this kind of attitude towards hard to make, well written desktop software makes me think people like you and the OP deserve every single one of the online-only Electron monstrosities on your desktop.
