If your curiosity does not lead you to contrast your experience with any other sailor in a dinghy or keel boat class... there is not much more to say.
What do you value in the sport?
If you don't want to know what the organiztion does and decide on it's value for you. ... fine. There is no penalty for free loading..
There is a cost tho....
Every cat class bemoans the small number of young sailors entering our niche of the sport... just heard it from the class reps at the US Sailing meeting.... So... what to do.
Fact of Life... parents put their kids into programs that are acreditted. THAT would be US Sailing. If you want to introduce those kids to your favorite flavor of the sport... you need to join and be part of the solution... If you don't value youth participation in organized sport.... OK..
If you don't value qualified judges to manage differences on the water... Ok. (your non support is a very very small cost)
If you don't value a program to grow the performance of the Race Officers... OK. (your non support is a very very small cost)
If you don't value leadership on all of the back office crap that you need... Ok. (your non support is a very very small cost)
It's your choice... but it is silly for me to convince you of what you should value.
