Quite. Lots of councils built very few one-bed places because they focussed on accommodating families. My council is something of an exception and built lots of one-bed places in the 60s/early 70s. They're really nice flats, too, lovely big bedrooms and living rooms, and only 4 flats in each 2-storey block.
They're very short of 2-beds though. They used to let families with 2 kids of opposite sexes move to 3-bed places when the oldest was 7, but now they would be hit by the bedroom tax for 3 years if they did that, so they're a bit stuffed.
I'm a bit in 2 minds about the principle though. It makes a lot of sense, but then I think of my MIL.
She has lived in the same 2-bed council house since she was 22, so 62 years. Three of her children were born there and all 4 brought up there (they put a partition across the biggest bedroom, boys in one half, girls in the other). They paid full rent until she stopped working at 65, but she now gets housing benefit because she's on pension credit. The amount of rent they must have paid in those years would have paid for that house several times over.
She is a really keen gardener, and over the years has transformed what was nothing but clay and builders' rubble into the most beautiful garden, with over 70 different roses, clematis, delphiniums and traditional perennials. I've seen less impressive rose gardens at stately homes. It is her life's work and her passion, and it keeps her fit and active. It would break her heart to leave it and I reckon she'd decline rapidly if she had to move, especially if she had to go into a flat.
In practice, I don't think it would happen. I think if they tried to force her to move to somewhere smaller, my 2 SILs, who are very wealthy, would stump up the money for her to buy it under Right To Buy, and the house would never be a council house again. There may be plenty of families who would be in a position to do the same, as they would inherit it later on.