I mean, there are some interesting takes in here, but at the end of the day it is a highly-opinionated ad for the product they are building, and the perspective they are putting forth is nothing more or less than the perspective of their ideal customer.

I don't agree with their premises and they lost me early on when they posited that the only reason anyone ever coded locally was to avoid network lag. I'd argue price, simplicity, performance, mobility, isolation of your changes, and probably half a dozen other reason I'm forgetting are in that mix, too. I'm sure that in some ways I am an old grey-haired dude whose comfort zone is outdated, but at the same time, if you want to move beyond the old ways of doing things, and create something new, you need to understand why the old ways existed.

This post/advertisement doesn't indicate to me that they started with that baseline of understanding.