Earlier quoted context omitted.
Based on the article: Some founders/directors kept using money from the foundation to pay their own private companies to get work done. This is highly irregular: you can’t manage funds that aren’t yours and use those funds to buy from a company which gives you profit. Legal council warned the of this irregularity, and nothing was made to change the status quo during years.
Isn't this theft, if true?
As directors of LibreOffice, they should be looking for the best deals for LibreOffice. Contractors (or any employee) are always (logically and reasonably) looking to do the least amount of work possible for the most compensation possible, so if as a director you use yourself as a contractor, your duty opposes your interests.
And if on the one hand you're being paid a flat salary (or no salary at all) for making decisions for LibreOffice; and on the other hand the worse the contracts you make with yourself are for LibreOffice, the more income you will receive, plunder is absolutely inevitable.
This is exacerbated even more with some nonprofit who is answering to an amorphous public who is funding it. They have no way of stopping you, other than withdrawing entirely.