On your other hand, apps like Discord are completely broken on modern Wayland systems. Discord's team never bothered to fix it, so now the only "native" way to use Discord is in Chromium. You could characterize that as a regression, but I'm perfectly happy with fully featured webapps as an alternative to misbehaving native apps.
MS can do it. Look at VS Code.
It's strange how they make some of the very best electron apps and also some of the worst (teams sucks on windows and Mac too and I don't see how their new edge-electron will fix that because it's also just a rebadged chrome just like electron)
The problem with teams isn't electron. It's the project management that prioritizes new features over making the existing ones work smoothly. The web version won't solve this as it's simply the same thing.
By itself it is already a huge suid executable that is almost impossible to verify. The MS idea of it is also a huge suid executable that you must download as a binary from MS and is contractually prohibited from verifying.
I don't disagree that native apps should be a goal, but what does it matter with a video call app? Even Apple knew they had to throw in the towel here, Facetime can call direct-to-web now. Arguably, Microsoft's reluctance to make a good Skype webapp could be cited as one of the reasons for it's demise. Who knows, maybe we'd all be Skyping people still if Microsoft didn't wait until 2019 for a truly nice PWA. It won't save Teams as a product, but it would be a fine way to salvage it as an application.
If you want an attractive groupware tool, it has to work on everyone's system. If you want an attractive IDE/text editor, it has to be the best for that specific system. These two goals, markets and products are completely distinct. By recognizing this dichotomy, I think they're strengthening their product lineup.
Meanwhile something useful like maybe caching the stupid emoji and reaction images so they don't lag every time isn't fixed.
But you're right. The saying is true. "Microsoft is better at talking to your boss than you are."
At most, we got one electron app that can get rid off, while at the same time get a guarantee to have the same feature as other systems.