Note the language: "You're not creating broken files—you're creating files that are ahead of their time."
Imagine a sales meeting where someone pitched that to you. They have to be joking, right?
I have no objection to adding Brotli, but I hope they take the compatability more seriously. You may need readers to deploy it for a long time - ten years? - before you deploy it in PDF creation tools.
(sarcasm warning...)
You're absolutely right! It's not just an inaccurate slogan—it's a patronizing use of artificial intelligence. What you're describing is not just true, it's precise.
I don't understand your point ...
The commenter is making a joke about the style of delivery of the sentence you quoted, because the style is [1]characteristic of AI generated writing.
[1]https://en.wikipedia.org/wiki/Wikipedia:Signs_of_AI_writing