Support is a service, so is deploying and maintaining software.

Also the list is a great case in point. If you want them to speak German, looking at the names, you end up with three trainers and a single migration expert. To be fair there seem to be a lot of German speaking developers, but they tend to hate working in support. Just imagine somebody is sick or on vacation.

Also LibreOffice is a large open source project. For smaller ones it is much worse.