The NHS is not, or should not be, a static service. As population trends have changed, so the NHS should have changed. It is not as if millions of people have suddenly became 70 years old, or suddenly began living longer.
Politicians of all parties have been negligent in this respect, but the Conservative policies and politicians of the last 13 years have been particularly bad.
Lansley accepted a donation from a private healthcare company and thought that fast-food companies such as McDonald's, KFC and processed food and drink companies PepsiCo, Kellogg's, Unilever and Mars were the companies that he should be consulting when addressing the state of the UK's health. His decisions started the rot, and Hunt (the longest-service Health Minister that the country has ever had) continued to make bad choices - the results of which are now glaringly obvious.
Nobody would argue against the NHS being more proactive and focussing more on preventative healthcare and education, but this can't be done as long as the priority is dealing with the overwhelming number of patients needing care here and now. Health education can also only be of limited use as long as millions of people cannot afford healthy food, suitable housing or lead healthier lifestyles.
Compare and contrast with countries such as Germany and Austria. As soon as these countries were back on their feet after WW2, the politicians and the population that vote for them decided that healthcare must be a priority, and that the standard of healthcare offered universally should be equal to that previously only available to those wealthy enough and willing to pay for it. The result is a system far better resourced than the UK, with far more doctors, nurses and beds per capita than in the UK. Waiting lists are all but unknown, both before the pandemic and since. The population realises that this level of service costs, but also that it has huge benefits to individuals, employers and society in general.
What price being 75 and knowing that if you have a heart attack, an ambulance will reach you in minutes and not two hours or more as in the UK? What is the value to an individual, their family and their employer of being able to have the knee operation, or other surgery, that will get them out of pain and fully functioning again? The Conservatives want to monetarise this for profit. Other "mutual insurance" systems (not the American profit-driven insurance model) exist so that everyone can benefit.
The NHS does need to be reformed, but the Conservatives have not demonstrated that they have the necessary solutions, and Javid's proposal is so flawed as to be idiotic. Politicians are supposed to act in the interests of the voters, and the country in general, not for the benefit of their donors and those who have the means to shout loudest. The question everyone should be asking is not "can we afford a universal healthcare system" but rather, "can we afford NOT to have such a system?"