Earlier quoted context omitted.
The linked site goes against everything the Linux* platform has historically stood for and frankly just sounds like designers whining that they can't design for computers like they used to for print. I see the same fight against customization on the web, where designers keep asking for ways to, for example, override font and font size preferences, default widget styling, prevent/hijack zoom/select/search/context/what…
> The linked site goes against everything the Linux* platform has historically stood for Nonsense. Linux is about libre software. It might be about choice, if you want. It’s not about “all software needs to let my desktop look like a clown makeup set or it’s literally 1984” Amateur environments from the 90s let you do that, but it has nothing to do with the Linux philosophy
Except it literally is about that? Libre software guarantees users the right to make their own modifications to it. That's basically the entire point.
https://en.wikipedia.org/wiki/Free_software
Being actively hostile towards users making and sharing modifications to your software, while still technically permitting them, probably doesn't disqualify your project as "libre" software, but it goes against the spirit of it.