I am just describing it how it is and we bought 30 y ears ago very near the end of a tube line on a very similar basis when so high were london house prices even right at the end of that tube line that my children's father's school ( he was head of a department in a school) had to offer school flats to teachers as otherwise they just could not afford to rent./live down here. The idea the past was some very easy nirvanan when people could buy (remember the days when even women could not buy at all without a man - before my time) is not so.
However definitely yes £70k newly qualified city lawyer pay and head of department in a school pay today are unusual people who have done very well. Most people don't earn that and I am not saying they do.
The East Midlands example and rent there is very useful to see as we keep just hearing from people in inner London on RoF. Lots of people are looking elsewhere. I am from the NE originally and there are areas where houses sell for £47k (including the road my mother's mother rented on - that family of course even in the 1920s could never ever have afford to buy ). If you earn 2x the mimum wage say sx £15,600 with over time (assuming you can get a full time job at all) that is £31,200 joint income x 3 is £93k ish so our mythical NE couple could afford that £47k house but would need £4700 deposit plus costs. They could save that if they lived with parents for 4 years before buying.
I am not saying it is easy however and I have given my older children money to help them buy and hope to be able to do the same for the younger ones in due course. That of course makes things unfair on people with mothers who don't work or didn't pick high paid work or couldn't earn a fair bit but then so are other things unfair in life like parents being ill or divorced or people not having a nice home life and damaged by things other than lack of money.
The 3% extra stamp duty on buy to lets is having an impact. In London there is not the rush of buyers either that there was due to uncertainties over Brexit and prices are dropping back a bit.
Our biggest problem has been wages staying very low. I don't mean in minimum wage jobs - no one ever really expects anyone in the bottom 25% to buy a property anyway, but in the next level of jobs up from them. I lived in very high inflation in the 1970s ( we had 60% over 3 years) and obviously wages had to rise too although not enough - it was a very uncertain and difficult time and to top it all we had a property crash too.
I would like to see bank lending criteria relaxed, let local lenders make decisions based on the overall person in front of them not some tick box exercise and secondly many more 95% mortgages available.
(And for people to see how lovely it can be out by the end of tube lines rather than 2-0 minutes from work in Central London. Yes my hour+ commute is a drage but people have had to commute from out here since the 1930s and earlier. It does not kill us. There is no right to live right near work or in cycling distance of work)