I believe that the Electron framework is a great choice if you wish to develop quickly desktop native apps using only JS, HTML and CSS. If you’re inexperienced to master the necessary tools then you should consider Electron.
However, this convenience comes at a cost and that is the speed and responsiveness Electron-based apps. There are many reasons, including numerous call synchronously, DOM operations being slow and unresponsive, etc. Many developers complain about this.
You can certainly build quick applications, but you must write clean well-optimized software (like not loading huge framework modules, for instance) since it could be bloated and turn slow.
I’m not sure that anyone is really against it. It’s a powerful word to describe an extremely nice framework! Use it only for the proper job 🙂