Tbh I am tightly wound on it, I just can’t fathom why one would opt to take an officer role or deliver a charge with no intention of learning it, it boggles my mind.
It seems to me the thing to do is just dedicate yourself for the things you volunteer for and do your best or excuse yourself from those responsibilities.
In principle I agree with you. But you've got to work with these people. Unless you decide to cut your losses, say goodbye, and change lodge. If you were to talk to them with your current incensed state of mind, you'd probably make things worse and I wouldn't be surprised if you ended up in the wrong.
Rather think of your goal and ask yourself what you could do to influence your brothers. Ideally you'd get them to renew their commitment and agree on a course of action. Perhaps try to raise the subject at the next meeting, but don't make it a crusade. For instance, ask if anybody else had noticed that the quality of the rituals has decreased. After a few agree, ask what "we" could do to improve this situation. Never raise your voice or give way to an indignant or confrontational attitude.
Don't expect it to get it all solved in one meeting. At the following meeting ask your brothers is they had some thoughts about improving the quality of the rituals and whether some of them had started some new habit to help their memory. And you carry on at the meeting after that. If there are some improvements, give credit where credit is due. Softly, softly, catchee monkey.
Alternatively you could just smack them on the back of their head every time they forget a line. : )