All joking aside, I use the same stack save for the templating. Unless you are a web developer I don't see the point of a CSS framework, it's much easier to roll your own. Nor of a site generator, I tried Hugo it saved no time at all. Nor of JavaScript, a few months ago I tried replicating the websites of a few companies to improve my css skills, HTML and CSS were enough to reproduce the appearance of all of them, yet none of their website would even appear without JavaScript enabled.
We stack on framework after framework, new languages, new tools, all for nothing but increased complexity and busy work for a new generation. (Save for the 5% of websites that actually need that stuff.)
Also interesting to see they actually sell a service, would have been curious to know what their prices are like.