And only the nut jobs, at least the last few times I tried it. It has been quite a few years at this point though.
And even if you don't have that experience, truck drivers are mostly right wing, so you are still going to have to listen to insane conspiracy theories and uninformed political theory.
Roasts are intended to be good natured. Insults from friends who actually like you a lot. They aren't meant to be taken seriously. And it's done with the consent of the roastee. Not everyone has skin thick enough for it.
At least, I think that's what you are confused about.
The one where Chakotay and Janeway contract some disease, so they can't beam back aboard the ship. The crew, led by Tuvok, abandons them there after a few weeks. Janeway is totally into the research while Chakotay nests. Then a storm destroys all of Janeway's equipment and research.
A few months out, the crew finds someone who has a cure, so they reverse course to get the two
If anyone else is wondering what that surgery is, it's to remove bald spots.
Recommend not searching it, the pictures were not great (not showing the surgery, but the results). I'm sure you've seen much worse, but why take the hit?
It's horror the first time. Comedy on re-watch.