That's a good thing. UI design peaked around that era and has been going downhill ever since.

These days you can choose between different UIs, some of which will have the "ribbon" style. I do agree though that it feels a bit dated if you're used to MS' office, but you get used to it quite quickly.

GP probably wanted to say that LibreOffice’s UI is 90s era Linux quality, rather than the beauty of Office 97 and such. Mismatched, not native, terrible stock icons, clunky and frankly ugly.