oh LibreOffice works great for me in general. Only for some documents with macros that were created in MS Office, I have problems running them. Eg: I once received a MS Word document that has some preprogrammed drop down list - so you click to extend the list and choose your items. The document opens fine, but I couldnt get the drop down feature to work. For Excel, documents with lots of VBA codes, I need to go in and do some manual changes.

In general, for 99% of the tasks, LibreOffice is fine. But it is that 1% which makes me still open up my Windows VM for MS Office.

After their shenanigan with subscription only models, we still see MS Office being used a lot. It shows how strong MS grips on the Office area is.

You are correct that 365 is used for most people. I used to use it too..For me, I prefer to be able to access stuff whenever I want. I live in an area with very shitty internet (both Wifi and 4G). Once, a client and I had to wait 5 minutes because Office Online takes too long to load up a spreadsheet. Offline for me is just a peace of mind.