Everything is relative.
Anecdotal personal experiences are rarely reflective of the whole, but certainly my own personal experience of the NHS is that was indeed terrible years ago, but that does not preclude it having declined further in the years since.
Perhaps back in the 50's, 60's, 70's or even the 1980's the NHS functioned smoothly and carried out it's mission to a relative degree of "customer" satisfaction, but my interactions with it as an adult began in the late 80's/early 90's, and I have invariably found the NHS to be practically useless, incapable of resolving any of my complaints satisfactorily, and indeed, it left me with a life-long deficit of mobility and related pain and discomfort simply because it did not offer some fairly routine remedial surgery in the aftermath of an accident, nor provide any sort of physio and recovery therapy, which, chances are, would have lead to full recovery, full use, and no lingering pain or discomfort. This took place in 1993, so hardly recent.
They have never resolved, or even offered me any meaningful feedback, diagnosis, or opinion on repeated, decades long periods of poor mental health, nor are they even willing to address a simple gastro issue that I know can be resolved with a straightforward medical procedure that does not involve anaesthesia.
So certainly from my personal perspective, the NHS is, and always has been utterly useless, and again, that does not mean that it can not have declined across the 30- 35 year period I am referring to.