You might tell them that World Sailing wants to standardize NoRs and SIs so that competitors encounter the same terms at different regattas (including in different countries) with as few modifications as possible. That is the intent behind Rules 89.2(a), 90(2)(a), and Appendix J.Yes of course the RC has read the RRS. They just seem to want to dumb the rules down for twilight racing, where most of the entrants are inexperienced. I have argued against it.
The problem is that different competitors prefer different things. For example: cancel or abandon a race due to lack of wind and some people who like very light air will complain; start or condition a race in such conditions and (most) other sailors will complain.Not all class associations want to have it either. In my days of helping to run one, we never instigated such a conversation, nor were we asked.
If some members of a class association dislike an RO’s decisions, it is up to them to persuade the other members and elect a couple of representatives to speak to the RO reflecting the class’ preference. Very few ROs would be resistant to that approach.