reading this as a mariner who works 2-4 months straight, on a ship, in deep sea, 12 hour work day, and no days off (working saturday and sunday).. lol you dont know how bad it really is..
"My [unrelated] job is worse" is not a logical reason for me to abstain from advocating for better work conditions for myself, where there is a possibility of better work conditions. I can dislike things about one tech job vs. another tech job while still appreciating that the conditions of either job probably far exceed that of a career I wouldn't like.
(And, I would also still default to advocating for sane worker's rights in your industry too, unless there is some compelling reason that working >8h/d, 7d/wk makes some sort of sense in your industry.)