To better suit OPs analogy, answer this

If something says “May contain nuts.” and you are only allergic to cashews but perfectly fine with peanuts, the “may contain nuts” means that there may be peanuts in there but there is no way to know for sure.

If someone who is deathly allergic to cashews eats a candy bar that has the warning “May contain nuts” and gets an allergic reaction and ends up in the hospital, the factory isn’t at fault because they said, “This may contain something you are allergic to.” and even despite the warning that you could end up in the hospital, you chose to do it anyway knowing the potential consequences.

If you tried to sue the factory over the fact that it said “May” instead of “will” your case is going to be thrown out because common sense should tell you that if something may harm you, then you should avoid it if you dont want to be harmed. Missing out on one fic or drawing or whatever isn’t worth getting triggered by something when the author directly said “This may contain triggering content” or “Chose to not use archive warnings.”

“choose not to use archive warnings” is not the same as “no archive warnings apply.”

