I agree with you in that I would not use this service.
The only issue I had was with shaming the developer for building something he thought people would want and soliciting feedback. If that wasn't the intention of my parent comment, I apologize and retract my statement.
This is fine for a student project or an app which has a fixed planned end-of-life, but not much more.
If I learn that API and it disappears, I just wasted my time. I should have learned an API that I will be able to reuse later.