I'm really surprised why this approach isn't used more often.

I've built several PHP and .net things like this over the years for clients, so they can author on there PC (or my console) and push static files to my hosting as static files, and still have roll back.

Seems like common sense to me, lower risk, lower server over heads, lower user error problems. Whack together a bespoke CMS/web form in a few a hours and you're done.