"Innocent Witches - scam"?.. Some people tend to have a very broad definition of a scam, huh. That said, I'm pretty sure I remember Tobi saying that all the sexiness is coming as soon as story catches up to art that is being constantly drawn - but it looks like there was not a lot of art drawn in all those years. You know, since now it is what's bottle-necking the stream of new content. So I do see how people don't understand where all the money went. It might've helped them if they were to see some sort of a plan about what amount of money is spent on what - you know, like it's sometimes done on Kickstarter.
That said, I'm not sure how much point is there. People, that support the project already, don't seem to need that. So the only think it might help is convince some people to become patrons. But probably not that many - most people will probably stay away till more content arrives - it can be too hard to trust this project after all this time.