Stagnant wages at low/mid levels shrinking the potential targets for increased taxation, growing retired class due to property wealth and a massive increase in numbers in receipt of some kind of disability benefit basically puts the government (whoever it is) in a no win situation. The numbers don't add up now and that will only get worse over the coming years with the increase in prevalence of disabilities amongst teenagers.
Have read a fair few 'labour need to be more labour to win over voters' articles/quotes and all they talk about is cancelling benefit cuts (including means testing of wfa). Might be blunt of me but my version of labour 'being more labour' would involve becoming bolder and more ambitious on policies that affect everyone in the UK, I can't see that happening with reeves as chancellor though.