Axum

Anyone reaching for powerQuery in excel should not, and instead be reaching for something like PowerBI.

None of those positions are expected to know VBA script either.

Old isn’t necessarily bad, unless years of decision-making have left it in a massively complex state (see also: Xorg)

The real reason here is that LibreOffice is written in C++, which is falling rapidly out of fashion for modern apps, leading to a smaller supply of developers.

Contrast this with Onlyoffice. Yes, the document engine is still written in C++, however the build tools use more modern items like python and onlyoffice supports having Javascript frontends and scripting, making it easier to source web devs to work on these parts.