I have been during free dinning (both on and off of it), and NEVER heard a member of staff ask if they were on the
FREE dining plan, yes they ask if they were on the dinning plan. Do not forget there are many people who will be staying with a paid DDP, only;those who booked in a relativity short window (or windows with bounce back etc) got the free dining.
You say you are not against people getting the 'free' plan, but you are resenting not being able to get the ADRs that you want.
You are villianising the wrong people, you need to villanize Disney for having to little capacity and over booking restaurants, and the system as a whole. DDP has caused increased demand and is making it necessary to book 180 days out, regardless of whether or not there is free dining. It is like anything else where demand is greater than supply, there will be shortages, and you really sound like you feel you ought to have special treatment because you are a
DVC member and you are 'paying' for your DDP.