The people I see complaining about Electron sound like they never did commercial frontend, and usually bring up stuff like Visual Basic making me think they haven't done frontend in 20 years or done anything non-trivial with GUI (if you actually used VB to build serious apps you'd know where the codebehind and using threads to avoid blocking the UI leads you).

Just a very loud minority. I don't particularly like Electron but compared to the alternatives it's the best choice for a lot of apps (as demonstrated by the success of many apps using it, despite "performance is the most important feature" crowd).