The same reason why webapps are a bad idea. We’ve built monstrous browser engines to do fancy stuff to pages in a bonkers language in a sandbox, and the resulting abomination is neither pages nor apps. And now we’re like: we have so much expertise in shuffling page parts around to look like they’re apps, let’s build “real” apps out of them. It’s like rejecting headphones and towing a car with broken windows around with you just in case you’ll wanna listen to music: it technically works, but makes negative sense.