Yes, it's like a cul-de-sac.
It shows deprived via colour using the index key on the left. With more deprived being red , therefore far to say deprive vs not- deprived being red vs not red.
This is the overall score yes.
I imagine "barriers to housing" would make sense as it could mean something like:
There is a barrier to buying a house, i.e the massive cost.
Whether this should be interpreted as "deprived" is another story.
I do agree with the last statement yes, many people may not have bought the houses when they were worth so much, however they must have some money to live in these houses.
Council tax for example is often upwards of £2600 per year, double the city average.
Statistically speaking, not everyone can be elderly although granted it does feel like that sometimes in Fulwood and Lodge Moor.