If you read the blog post it's pretty obvious what happened. Someone at Mozilla.ai had an extra day on their hands and ran a bunch of text they'd collected through a few models. They thought "hey, this is kind of cool, let's make a blog post about it". Then they wrote one stupid line about their motivations (likely made up to justify playing around with local models) and get completely lambasted for that one stupid line.
I'd rather live in a world where people are comfortable throwing together a quick blog post detailing a fun/stupid project they did than one in which they do that anyway but are hesitant to share because people will rake them over the coals for being "unserious".