I think many people talk about it but from a different context. The NHS is being de-funded by the same politicians whose friends benefit from these deals. Hard to hire competent people when your budget keeps getting cut.
Total health spending in England was around £129 billion in 2018/19 and is expected to rise to nearly £134 billion by 2019/20, taking inflation into account.
https://i.imgur.com/iab51Zq.png
From OECD https://data.oecd.org/healthres/health-spending.htm
https://www.ifs.org.uk/uploads/images/election2017_images/bn...
https://www.ifs.org.uk/publications/9186
Perhaps a more fair statement to make would be that demand for NHS services has seen a dramatic increase since 1997 and as a consequence it's budget has seen dramatic adjustments.