Ubuntu is just tweaked Debian
All packages are recompiled for Ubuntu and Ubuntu has everything in its own repositories. They literally distribute the software. If you just change config files a bit and the software packages still come from Ubuntu, it's not really your own distribution. It's Ubuntu and repository accesses still count towards Ubuntu stats.
Microsoft doesn’t hold a copyright worldwide for product names.
Product names are trademarks, not copyrights. For someone shouting in another comment about garbage misinformation, you fail at basic stuff.
tech companies
The French government is not a tech company.
its own Linux distribution
Tweaking Ubuntu a bit counts and own Linux distribution?
Trademarks don't matter when it's only for internal use.
The software is called Meet. Visio is just the name of the name of the government platform Meet is running on which is internal use only.