[rjf72]

He's talking from the perspective of the UK, where he is a physician. The public health system in the UK has been under extreme and increasing stress. It's underfunded, understaffed, overburdened, and things are getting worse.

In a related article [1], it was mentioned that 70% of children with mental issues do not receive treatment because lack of resources - high rates of mental illness mean there's simply not enough healthcare to go around. Even those that do receive treatment end up facing "unacceptably long waits." The current ambitious goal in restructuring the system would still leave some 65% of those with diagnosed medical conditions, without treatment. Wiki also has a number of decent citations for further information. [2]

When things are provided through public funding there is an obligation of society to ensure that they are utilized in a sustainable way. If that obligation is not met, the systems become, quite tautologically, unsustainable.

[1] - https://www.independent.co.uk/news/health/mental-health-cris...

[2] - https://en.wikipedia.org/wiki/National_Health_Service#Fundin...