PostScrum exists because the same conversation happens in every engineering org, every few years, with every new leadership team that discovers Agile and decides to scale it. The engineers who lived through it know why it doesn't work. The people running the ceremonies don't read engineering blogs.
This site is the resource we wish existed when we were sitting in our first four-hour planning session wondering who decided this was a good use of time. It's criticism backed by data, arguments backed by evidence, and parody that only works because it's accurate.
No Scrum Masters were harmed in the making of this site. Several were mildly inconvenienced.