you release feature X. The first person writes it for the web. The web version was easy, because the feature relied on URL deeplinking, which is nice and easy with browsers.
You then realize that Windows doesn't really offer such a concept as easily. You think about application URLs. That mostly works, but it takes a couple weeks for the Windows team to get it working.
You implement the feature over on Macs as well copying the Win strategy. But a recent Mac OS update causes a bunch of permission popups that mess with another thing. Now you're messing around with that, and your internal users are pissed (cuz they're all on Macbooks).
There is no Linux version, luckily.
I mean... OK, yeah, you still have to deal with platform differences even when using Electron. But you are in the same boat with like.... Slack, Discord, etc etc. You get _all_ that shared knowledge, a unified code base. And in theory you throw any of your engineers at the problem and they can try very hard googling "Electron [issue] windows".
I also bemoan the fact that _even Slack_, with its billions of dollars, didn't feel the need to have a native application. But I do get it, especially when there's a lot of pressure to ship.