I think it best to take the advice apparently negative or positive as a professional would, critisicm that makes you think a little harder and maybe take an extra effort to test and prove an idea,
mind you its a forum so the topic is open to the publics eye, they can either comment, help, degrade or appreciate what's posted but you have to remember its the internet and alot can and will go
and just to add, I can't imagine that circuit sustaining much load on the negative side of things
and a question, idk if the original designer noted, why the virtual ground from the negative and the ground of the positive regulator?