FWIW, IME potential bidders who ask for detailed descriptions of every visible flaw seldom bid, and often find a reason to return the item if they do bid/win. I politely reply to requests to forensically describe every flaw with something along the lines of: "I have provided detailed photos which accurately show the item's condition. It is not represented as a mint item, it does show signs of use. If you don't feel the posted photos are sufficient to allow you to determine the cosmetic condition, please feel free to refrain from bidding." Usually I never hear from them again and they don't bid. If they send me an unhappy reply, I block them from bidding on any of my auctions. Even if they don't reply, if I sense an attitude or their feedback shows frequent dissatisfaction with purchases, I'll block them. I don't want my auctions inviting overly-critical bidders, and I see no sense asking for trouble.
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I only see one problem with this, PCB. I sometimes ask very detailed questions. There is a reason for it. Maybe 3 to 5 percent of listings on ebay provide adequate information, and/or enough very good pictures with which to determine condition. And, as you know, with many things that are older and valuable, condition is everything. It sounds like you provide many well-lighted, detailed, in focus pictures. If so, you are in the minority on ebay.
In fact, it is my experience that there are many, many sellers on ebay whose main goal is to try to pass off second or third tier parts as something they are not. Or, they just don't care enough about honest and up-front listings to provide clear pics and detailed information. In my experience, obfuscation, poor pictures and absolutely no verbal description of condition is the norm on ebay. A sad trend. There are a few sellers of vintage bike parts who tend to the opposite, and they stand out like sore thumbs. It doesn't matter too much if you're buying something like a fifteen dollar derailleur. But it matters a lot, to me anyway, if it is a two hundred dollar brake set, for instance. I'll ask detailed questions on condition, only because most sellers don't provide any.