Im gonna be honest it sounds more like a procedural oversight.
But the "oversight" is likely due to the fact that those policy-makers only see MS Excel used around them, and only expect people to use MS-Excel - which is why they did not think there might be any problem with requiring its use in a procedure. So, the people doing policymaking, and other related technical work, at the EU do actually need their MS license to work.
Therefore, that these sentences don’t describe the situation great could be due to poorly vetted copy-paste of AI text.
I know that this pattern is used by AI but it only said this is, one time not two times and then continued with It is rather than the pattern that you mention. An AI would've probably used "This" second time instead of "It" most likely given that its probably really trained on it.
I mean, we do use "this is" in a sentence atleast once like they did.
How else do you want them to write this point :/
I don't think that Libreoffice team is using AI to write their messages.
Ever since LLM generated content proliferated we now have “This isn’t X. It’s Y” shibboleths EVRYWHERE!
A person doesn’t normally start a sentence with “This isn’t a silly minor thing that you wouldn’t think it was but I had to say it out of the blue as a set up for the next sentence.” only to be followed by “This is a major deal worthy of you resharing and liking!”
They might do the clauses in the other order, though. “This is a huge deal! Not just business as usual.”
Or maybe, ever since you became aware of it, you started increasingly becoming aware of it?
It isn’t like em-dashes
Your comment can be rearranged in that it's not X it's Y format too.