I have no problem with spotting schematic issues (or spotting code issues) given appropriate time to do it. I actually prefer these to rushed questions where you have to implement the solution because it lets me get into the design considerations without spending time drawing symbols or stumbling through syntax.

Last time I got that question it was a schematic large enough that I would have put it on multiple pages and I only had a few minutes to get through it, which was a problem. Brought it up because it seems to be a touch point for others.