This is correct with one caveat. You don't have the advantage of the EAA's umbrella insurance unless the YE event is registered in advance with national.
I would also second Ron's comment is that this is the exception rather than the rule. Don't let one guy whose communication skills suck defer you from your agenda. Show up to some meetings, get to know some of the other members. Then show up at the YE rally. I'm sure that they won't refuse an additional pilot. If they do, the chapter has other issues.