So the "movement" against modern browser features is not a movement and has nothing to do with these features but its simply a version of "kids these days lost their ways" thinking. A version of conservatism, I guess. "Everything was better in the good old days" and "The new generation is horrible, the humanity is doomed" kind of thoughts are probably a manifestation of fading youth.
But for browsers there is an obvious need for apps that are not “vb in an empty vba-enabled document”. This ugly heap is only stable because an enormous effort and skill goes into making it so.