It comes down to choosing quality or quantity. You can't have both. Obviously lots of people think like you and choose a lowest common denominator solution.

And you are seriously underestimating the cost of Electron (which isn't an option on some relatively big platforms like Apple Watch). Memory consumption, CPU utilization, and battery consumption are the key factors and a well written native app will always beat a well written Electron app usually by more than 20%, especially on battery consumption. If you are lucky and have millions of users, then multiply that across all the users and it's a tremendous amount of waste.

I can see why you might choose Electron if you have very few users or the app is essentially a web page.