Technically, you can be a hoper... and for the record I spell it "worshiper" so must be right.

By the way, if a person joins do they get like a fancy cardboard laminated membership card or a super cool Cult of Rizin secret decoder ring?

I'd join anything for a membership card...
*sorts through wallet*Let's see... National Association of Albino Catfish Farmers (still not sure if the members or the fish are albino...), American Dental Floss Collector's Club, The 100 percentile IQ society (technically no members but, the cards were already all printed), Buff Chick Woman's Gym Membership (don't ask...), The International Honors Society of Cereal Box Readers, The Scott Baio Fan Club (again, don't ask...), a coupon for 35 cents off Pop Tarts... An old movie ticket to The Adventures of Pluto Nash, Member of The Distinguished Collective of North American Chapstick Connoisseurs, Another ticket stub from The Adventures of Pluto Nash... National Snowshoe Awareness Society, Groucho Marx Member of No Club Member, The Hair Club for Kran...
Well, you get the point.