[sparsely]

The result is that everything will look and feel slightly off, as the recreation of native elements will never be quite perfect.

[mmargerum]

More than just off. Especially on iOS there is a ton of functionality in those native controls thats going to be very hard to replicate.

[amimetic]

As I’d guess most people spend most of their time in Chromium browsers and electron apps probably a case to make that ‘native’ in the sense you imply is Chromium!