I think the Dealer answered your question by turning down the sale. I wouldn't take it as a critique of you as a buyer but a critique of the knives he had in stock
I disagree in that I think they are critiquing the buyer, not that there assessment is always correct. They are referring to the stock only as a polite out. Basically saying no matter what I have you aren't going to be satisfied. What it comes down to is they are fed up with OCD buyers and have found that the process starts with asking for inspections, but will not end there. These buyers obsess over every little detail and eventually file claims, ask for refunds and cost the dealer money, as well as post their problems on forums. Unfortunately some non problem buyers get thrown out also , when all they wanted was dealer to take a quick look to save them both a problem if there was a true flaw in the knife. Which group the OP would fall in I have no idea.