Earlier quoted context omitted.
Yeah, I have tested this hypothesis on myself. I have tried lots of fonts touted as the best for programming and found exactly zero difference. Time wasted, chalked up to experience. I think that anyone considering a donation should at least try the freely available fonts to see whether they make any difference.
Why are you so determined to damn this effort? Can you imagine launching a weekend web startup project and having someone on here to look elsewhere before considering a donation? People starting businesses come here to be encouraged, and this guy isn't doing anything wrong. In fact, I wish more creatives would consider these sorts of alternative approaches to patronage.
It's important to give people honest and clear feedback. By blindly encouraging them, you are doing them a disservice. Perhaps he can fine-tune his effort. Perhaps his talents are best applied elsewhere. You simply don't know. If his skin isn't thick enough to accept honest criticism, he shouldn't be starting or doing anything on his own. Honest feedback is important.