The salary multiplier went up as it needed to for affordability to match lowering interest rates
TBH It was always a bit of a dumb test and hence why they moved to an actual affordability test as opposed to a simple salary multiplier.
We also had higher tax rates, generally.
Its very difficult to compare across decades, but from a simple affordability POV I don't see that similar people to me would be that different TBH.
There is another oft forgotten angle.
IIRC my interest would have been something like 225% of the house value. So I could buy a house for £27k that would cost me £88k and be worth £27k.
Now that house would be £225k, cost probably around 100% in interest. So I could buy the house for £225k, cost me £450k in actual payments and be worth £225k.
Compare the £88k to joint income of around £12k.
vs £225k now to a probable joint income of around £60k.
As ever its not always as bad relatively now as people seem to think. They only take the negatives and dont see the positives from the differing situations.