Earlier quoted context omitted.
Want to double-down on this. I read "native" and immediately assumed the main selling point was perf - which enticed me to open the link.
Paying for native macOS apps is like buying vinyl records. It’s an aesthetic choice, nothing more.
Slack in particular is extremely, extremely slow, even by Electron standards. I can't expand it to the full-height of a 4K (running at 1080p) portrait monitor without typing becoming unbearably laggy, so I either have to keep it at 1/3 monitor height, or have to use another application for writing the text.