This is true and a valid use case I think. Slack has abstracted enough of their UI to be re-usable cross platform that any re-write would likely be a regression

This is true and a valid use case I think. Slack has abstracted enough of their UI to be re-usable cross platform that any re-write would likely be a regression. Look at 1Password and the amount of shit they get on HN with the beta version. Rewrites are hard and they take a tooooooon of time to do correctly and require a lot of engineering work to keep the product consistent across platforms. Do I wish that electron apps were better optimized? Yes, however, I also can accept the tradeoff for apps that need to work "everywhere". For the most part, Slack works just fine. Their problems are less the UI/UX and more to do with infrastructure. Slack rewriting to a native app would have a tiny (if any) effect on these outages.