Because libre office is not compatible with many others. You can open it sure but there’s no guarantee that opening .doc or .docx will have broken formatting. Not good for those in the academia or workplace where formatting are strictly enforce.

Hmmm, on the bright side, with lemmy going mainstream maybe some of this culture (including privacy and FOSS) becomes more and more openly discussed.

This! We all mourn at our own pace. Some people may still be at the anger stage.

I wholeheartedly support NOT engaging with beehaw. Any instance that supports defederation and censorship is an instance NOT worth supporting. The fediverse is supposed to be a refuge of free speech (within reason of course.) If an instance chose to defederate and isolate itself, it deserves the very same isolation it so wanted.

Tldr; beehaw wants to isolate, then give it the isolation it wants.