I made that comment in slight jest. But anyway using non GNU OS still is consistent with my viewpoint that you don’t operate the kernel per se. The kernel sits at a layer below what the user operates.

As for the argument of apps being made for Linux, it is nothing more than just a semantic shortcut to the common ground between all these independent OS

It’s all fine as long as we don’t lose anybody

Is it, though? I don’t know about you, but most (if not all) of my interactions with my computer are at levels above the kernel

As far as I understood, the already posted/federated content is stored by each instance in its database. The pictures/media might be gone but the text should be copied around depends on (de)federation policies

Torvalds wrote the kernel, not the operating system. It’s a part of the GNU/Linux OS ;)

Maybe LibreOffice Draw can help you out? It has PDF editing capabilities