Yeah, Producer titles without any responsibilities are included as part of compensation packages all the time. Sometimes they're assigned because talent is helping fund part of the movie or consulting on some specific topic, but otherwise not involved other than as talent.

Talent is not expected to know everything about every prop they are handling, that is someone else's job. They are informed of what they need to be careful of either by a prop master, or the armorer. If the armorer is sending out a weapon saying it is ready for set, then talent will expect it to be in the state they have been educated about in advance.

Thing is though that being a Producer comes with different rules on a set. In a normal circumstance narcing on one can be a career limiting move which is why anonymous union and studio hotlines exist but little fly by night passion projects don't have those. I have seen some really messed up stuff happen when one of the people who puts up the money for the paychecks is in an indispensable role and they flagrantly break a rule... But this case where the highest ranked on set safety officer is the other half of the equation doing it what in the absolute fuck do you do about it?

Given how people were already leaving the show for reasonable safety concerns (which believe me usually have to be pretty agregrious for people to actually split when they are working shows like this ) you can kind of tell tell what the general Producer/Production Manager attitude was about crew safety versus Producer privilege. Technically speaking I think all of them should be at least fined up the ass but it's so rare that a Producer, celebrity or not is literally left holding a smoking gun.

We as a culture need to really start looking at the power dynamics on a set because lemme tell you - they fucking matter and they can get you killed.