it is true that they do not integrate with widgets and theming, but that’s not exclusive to electron. GTK apps don’t follow system widgets, nor will they follow theming on non-gtk desktops. I do also prefer desktop apps not be written in electron for the performance reasons you mentioned.
Yeah they are, this problem is super overblown. Weirdly I’ve seen articles about this coming up for other apps too, like the ChatGPT app for MacOS storing conversation history in plain text on the device. Weird that this is suddenly a problem.
If someone wants better security, the can use full disk encryption and encrypt their home directory and unlock it on login.