On the contrary: using a web view is the worst possible UX for your users. It's slow, uses a ton of memory, and doesn't integrate well with the desktop. The only reason people ever did it was laziness, not because it produced a better product.
I'd argue that being slow and using a ton of memory has more to do with (very) poorly optimized websites rather than blaming browsers as a whole. Sure, they'll never be as efficient as native, but people put a lot of work into optimizing browsers and most websites are never optimized.
Memory use alone is an interesting case for comparison because websites tend to have a lot more images/videos loaded than other applications. All of those PNGs and JPEGs need to be decompressed before you can paint them to the screen which makes them much larger.
I'd argue that being slow and using a ton of memory has more to do with (very) poorly optimized websites rather than blaming browsers as a whole. Sure, they'll never be as efficient as native, but people put a lot of work into optimizing browsers and most websites are never optimized.
Memory use alone is an interesting case for comparison because websites tend to have a lot more images/videos loaded than other applications. All of those PNGs and JPEGs need to be decompressed before you can paint them to the screen which makes them much larger.