> I can't imagine trying to replace MS word with libreoffice for businesses. I respect the project and the complexity of the task, but it's just not there for even light professional use.

Exactly.

Just work in the finance or insurance industry for a year, and you will see how it is part of the daily workflow to use very obscure, advanced Excel feature combined with VBA. If a proposed Microsoft Office alternative cannot handle this, it's not suitable.

I personally observe that a lot of nerds who barely use Excel in their daily workflow patronising that ... (in particular LibreOffice) is an alternative to Microsoft Office. Better first learn how the actual powerusers' workflows (in particular for Excel in the finance and insurance industry) actually look like.