Web developers are not magically worse at this than native devs. See: much of the windows OS lately. The performance of a web view app is more to do with the quality of the devs than the platform it's built on.
Generally though, web developers are of lower quality than native app devs. Often little or no consideration to the layers below, and their focus is more on security rather than speed.
Generally though, web developers are of lower quality than native app devs. Often little or no consideration to the layers below, and their focus is more on security rather than speed.