Libreoffice is also pretty good these days if you need to edit office files, impress has the most compat issues but they are rare even there. In many ways it is more capable than office ime.
Several years ago they added like 4 new "modern" UI styles that you can choose that are more fashionable. They're definitely innovating here, though I still find I'm most productive in the older style. And the sidebar for detailed properties is a huge improvement over 90s all-menu UI. Theme editing is also more accessible than in the Microsoft versions imo.
I should say that I disagree that office 97 era ux is necessarily worse than "modern". Office 365 is barely more capable than office 97 in any way that I care about.
