The author is fighting a strawman. Rather than engage with the specific problems these solutions were built to solve they dismissively regard them as just flavor of the week trends purely for the sake of chasing newness. This is true of the entire post, but I'll tackle just one since it's emblematic of my issues with all the rest: The argument for Electron and React Native isn't "it's modern", it's "it's much cheaper…
And those VCs and that CEO won't be particularly concerned with technical excellence, they'll focus on their metrics regarding user acquisitions, market share, etc.
Since technical excellence is of at best secondary importance, it makes sense to commoditise the technology and make it as easy as possible to build such applications. Build some framework, give it away for free, ideally open source. Brag about how you're enriching the world through your open source contributions. Optionally snicker at the fact that you're in fact controlling how things get built on the so-called open web.
Relax on your yacht while drinking a good champagne. Don't explain to the poor sods still worrying their brains about technology why "the economics" prevent building quality software, because you don't give a fuck anyway. One of your employees or the employee of some other web company will surely set aside some time to clarify this, like the good little employee that they are.