When you work in an industry where the entire collaborative workflow of everyone is based on software that doesn’t run on Linux, then not running that software is equal to not being able to work in that industry.

there's no denying that's true, though ofc it has alot to do with microsofts very agreessive and anti-competitive practices.

though its all a bit tangential, the main issue i think comes down to what someone means when they say "everything". certainly if someone said "you can do everything", i'd expect them to qualify what is (should be) obviously a slight exaggeration as parlance. they don't literally mean "everything" they just mean most everyday things. i think its fairly common in everyday speech for someone to be able to work out thats what they meant.

in the few rare cases when someone literally means absolutely everything, then yes that silly statement would be incorrect. and if strictly intended with that meaning would certainly qualify as misinformation.