The releases are crazy inconsistent. I've done the same thing as you OP - sub/unsub from his gumroad - but as of this year he's begun to be in some sort of contact with the fans so I'm staying subbed in hope that some great stuff truly will be released soon. Sometimes it takes two months for a release on gumroad, checking the gumroad app daily is a vain task. At this point it's no secret that sam's been a slacker and shit comes out much later than he says it will. maybe if he stopped juggling so many projects (and spent less time w/ twitter propaganda) he'd be able to finish a single one. We've gotten two crush500 episodes this year, something which he originally said would be monthly. I wouldn't be surprised if we didn't get a 3rd ep until 2019.
Sam has so much in the roster, he gives us previews often. maybe the content truly isn't fleshed out like we're lead to believe, maybe he's just insecure about the content and thinks it sucks.