I agree - Cascade is a good organization and, while I may not choose to do a lot of their daily rides or events very often anymore (had my fill of crowds on bikes and I've done them all multiple times), I renew my membership every year in order to continue to support their outreach and advocacy on my behalf.
When you get right down to it, none of the ride leaders is a salaried employee of the bike club - every bike club like so many other organizations relies on riders who are willing to share their love of riding and knowledge of routes, etc with others, so they are generously volunteering to lead rides and shepherd others along. They're no different than any other rider in the parking lot, save the volunteered-for ride leader responsibilities, so I'm sure that they'd welcome your participation and help at any ride you are interested in joining...have fun!