No, your insinuation is that so many are lying....that DVC seems to have so many more people with "special needs" than other places. It just reeks of the "why are there so many people in wheelchair" threads.
Maybe there ARE a larger percentage of DVC owners with breathing issues. When you think about it...DVC is owned in large part by two demographics: retired people with excess money and time on their hands, and people with small children. MANY children suffer from asthma, and some outgrow it. There are also many retired folks who begin to suffer from breathing issues as they age. Scientific studies are also showing allergies and asthma to be dramatically increasing....some studies are showing it is related to increased carbon monoxide in the air. So yes, more people ARE beginning to have issues who did not have them before.
If you saw my mom checking it at a DVC resort asking for a non-smoking room, you would probably roll your eyes and call her a liar. She looks like a normal, happy 60+ year-old...she is not in a wheelchair, lugs her own luggage, walks all over the parks, and generally looks very healthy. My mom is not walking around a hotel lobby displaying her inhaler, but you can bet it is always with her.
I have NO doubt that some people DO lie about the issue, but your insinuation that there are a large number of DVCer's who do this is insulting.