I think there's two 'poles' here--'good' in terms of feature rich, sure, there's loads of it.

'good' as in performant--an area that game dev types (rightly, IMO) criticize and harp on? There's far less of it, video games aside.

Think of the perceivable slowness of many web application you use daily, Windows 11's, well, everything UI-related, etc.

Hell, my 3 year old iPhone can't scroll Uber Eats at 60fps consistently. Is 'Uber eats' 'good'? From a functionality standpoint, yeah, of course. But is displaying a list of images and text and expecting it to scroll smoothly too much to ask?

Software can be 'good' in terms of functionality offered and 'bad' at the same time, depending on your perspective.

IIRC I think Mr Fleury has a background in game-dev, so his perspective is totally understandable. Modern games are remarkable feats of software.