On the NHS, I tried for years to push for improvements to switch to digital cancer screening invitations after they missed my mother (offering to build the software for free), which is now happening, but suggesting the NHS isn't perfect is against the religion here. My sister who works in NHS DEI hasn't spoken to me since publishing a book on it.
Every time someone with the finances, vision and ability leaves I think the situation gets a little bit worse, it increases the proportion of people remaining willing to put up with all of it. Anecdotally, many of my friends have already left, some of the older generation want to leave but feel tied in. My flight out is in 6 weeks. Good riddance, no doubt.
That's really not my experience. In fact, almost everyone is surprised when I suggest that despite its many problems, the NHS does better for the people than most modern countries' health systems.
No one I know who has lived in France or Germany or any developed country other than the US thinks the NHS is better than the systems in those countries.
Speaking personally, the biggest issue isn't the waiting, but the chaos and uncertainty. Every part of the NHS is in a constant state of crisis management. I don't terribly mind that I usually have to wait about two weeks to see my GP (family doctor), but I do object to the fact that I'll invariably be seen by a locum (temporary) doctor who doesn't know how the local systems work and won't be there if I need a follow-up appointment. I could live with waiting lists if they were always 14 weeks, but it's incredibly disruptive to not know if it might be 14 or 40 weeks, to not know if your long-awaited appointment will be cancelled with no notice due to staff shortages or industrial action. I've almost got used to the fact that the corridors of my local hospital are permanently full of "temporary" overflow beds, primarily occupied by frail elderly people, often in considerable distress, sometimes obviously neglected.
I'm fairly high-agency and I feel that the system is hostile and difficult to navigate; I have no doubt that many patients who are less able to advocate for themselves suffer preventable deaths because they fell through the cracks.