I would give YC the benefit of the doubt: that they’re actually giving honest feedback. When YC interviewed and rejected my company, they stated candidly that

I would give YC the benefit of the doubt: that they’re actually giving honest feedback. When YC interviewed and rejected my company, they stated candidly that they didn’t think our team could execute. In retrospect, I agree with their judgment at the time, and appreciate that they were polite and honest with their feedback.