YANBU: BUT YAB a bit ignorant.
Council housing is great. Its nor just for benefits claimants. It was always intended to be for everyone. It was meant to provide an alternative to shitty private rents that was of a decent standard, secure and at a fair rent. It was NOT meant to be only for the poorest.
The problem now, is that the supply of council housing is so low that it can be very hard to get housed unless your circumstances are very urgent. OP: if you live in an area of low supply being on benefits will not do it! Try homelessness, domestic abuse, severe medical problems. Expect to spend several years in "temporary accomodation" first. You are being very flippant to suggest this is a way onto "the property ladder"
You are right to critisise Right to Buy as this is a large reason why the supply of council housing has been depleted. You are correct to note the anomaly of ex council tenants getting to buy much more cheaply. The reason for this is that behind the retoric about helping people into home ownership, Right to Buy is not about helping people onto the property ladder- its about deliberately depleating council housing stock.
You are not far from the most significant loser in this. Spare a thought for families in bed and breakfasts whose potential new home was sold off in the 80's.
Im not sure why you expect the housing market to be fair. Some people are paying less than you because they bought before prices went crazy. Do you resent them as well?
Despite all this, you do have a genuine greivance somewhere underneath the layers of bollocks. In a functioning social housing system people like you and me on (im assuming) low to middle incomes would have had the option to live in council housing in socially mixed communities, at a fair rent. Now we can live in EX council housing, in socially mixed communities and pay market rates!!
Youd just be better off looking at the real reasons for that- instead of having a winge at your neighbours who got there via a different route.