Retirement age has not gone up since it was created in 1940s. Not crazy to raise it a little.
Quickly looking at Denmark articles, it seems they’re raising the age to adjust to life expectancy increases as well.
I don’t see this a sign of the system failing.
Since 2010, the retirement age for women has raised from 60 to 65. Bringing it in line with the male retirement age.
See https://www.thetimes.com/money-mentor/pensions-retirement/st...
The age (for both) is gradually rising to 68.
Source https://www.gov.uk/government/news/state-pension-age-review-...
The raise to 68 will happen, but it has not happened yet. So, I think to frame my comment as “simply untrue” is disingenuous at best.
There was a steady rise in life expectancy at retirement age in the UK until 2020, then something happened and it's fallen significantly. My guess is that it will rise rapidly over the next 15 years and this will be regarded as some sort of triumph for the public health system (unless there is another pandemic of course).