No. As much as people (myself included) are disappointed in the change in direction, he did not literally deceive his backers. I have no previous archived version of his patreon, but it states that any backing will simply support any direction he chooses. He never gave patrons any meaningful influence over the project, nor did he ever handcuff himself to any promise on what "Saria Reclaimed" stood for, other than sexy blue hair tan tomboy (even that could be up in the air). Saria Reclaimed is only described as a lewd game.
I like calling out fraud as much as the next guy, but this ain't it. Don't overuse that label and make it meaningless. Save it for actually fraudulent/scummy projects. There are so many there's no need to catch innocents in the crossfire.
In the meanwhile. Keep a copy of 0.15 and play that for now. I am here to crank my piston, it is still a great game for that. I will be waiting for CG rips once the VN gets enough content.
Another possibly great thing would be to ask Velminth to release the project files of Saria RPGclaimed, so there could be maybe a community revival project, if he really doesn't care for it anymore. I would hate to see it shelved forever.