Agreed.
However, I do have a question for you: what do you think can be more full of bullshit, an oral financial statement by the founder during a conversation, or his audited financial statements?
Yes, the notion that balance sheets and income statements don't tell the whole story and can be misleading is a fact. It's also a fact that they're useful tools, part of elementary due diligence, in combination with conversations with founders.
He asked financial questions that are in audited financial statements. Asking a founder and assuming it's all true is fine, but when making the investment he's surely having someone do due diligence on the finances to confirm. Yet he's denied that anyone else reads these documents for him, too.