daym that got noscopped, now I wonder about me... but seriously, the guy has a little over 200 patrons and a tier at 100 that you have to sub to if you want to see all his art at, eventually art leaks online and prowling online all the time for leaks to get rid of sounds like a headache and a half.
he could offer up a fair number of things that you couldn't exactly leak online that would be either shopping physical, online, or something for the community only, but it seems that's only for his 100 tier community, which is voting on a exclusive pinup, and I believe that most of those are sketches that eventually turn into colored pinups.
honestly he's asking allot for someone's whos basically pinup a artist who slowly makes comics. You'll find more and better IMO from doujin artists and you can get there work for about 5-7 dollars on DLsite and they only have fanbox sites, if they have one, to give behind the scenes looks looks and for support.