I don't think so but to my mind the answer is obvious because the number of scams has increased. It is difficult to define who is who. That's why a lot of people think that it is necessary to be careful with everyone
You are right, some people afraid of scam because maybe they already tried being scammed before. They are just thinking for the safetiness of their money this time.
The community being more cautious because of that, actually is a good thing, to prevent further scamming even it's a little or not making things even complicated but that's the price to reduce scammers from being around, many new sellers or service offerers might complaint about how they hardly get any trust from anyone but it's life, only the one who can survive deserve the trust.