I’ve certainly noticed in the past big differences in advice. The NHS will downplay and not suggest investigations whereas another (non UK) site does the opposite.
The NHS advice surely is carefully crafted not to cause unnecessary (from their point of view) GP visits, tests etc.
If you are seeing a disparity between UK and US in terms of advice about when something needs to be investigated, it could be that the US site is over-promoting investigations.
Keep in mind that the NHS puts a lot of work into prevention, into staying healthy without medication - it will quite often advise life-style changes, rather than popping pills - and that's for patient benefit.
I agree with many of your points.
The NHS follows a strict set of guidelines for the identification and treatment of illnesses. They do not act like medical businesses such as hospitals whose goal is to do as much testing as they can justify to get more money from insurers.
I don't want to die just because it's more cost efficient for the government to save two others.
If you're not sick you should not be subjected to too much testing, because the risk is that you are diagnosed with a thing that will not harm you. And once you're diagnosed with it the tendency is to treat you for it. Treatment is not a neutral option, it carries risk.
Over-testing, over-diagnosis, and over-treatment all contribute to patient harm.
The NHS regularly fails me, my friends, my family by refusing to do diagnostics while clearly sick. My GP refused to test me for Lyme disease even though I had lots of classic symptoms and had been in close contact with a deer (because he believed they’re not an issue in the area.)
I feel we’ve strayed quite far from my original point but that’s to be expected in any religious discussion.
Do you have data that supports the NHS withholding or advising against necessary care that results in worse patient outcomes?
More utilization is not inherently better, and even in the systems like the NHS, everyone is incented heavily to keep patients healthy and out of the hospital system. The idea that they want you to be sicker rather than provide relatively cheap preventive care is, generally, absolute nonsense.