That's why I said "effectively" - in practice, removal of the personal allowance for high earners, removal of child benefit for medium-high earners, and removal of other state benefits for lower earners all amount to a significant reduction in marginal take-home pay for income in the affected band.
My in-laws are both of a similar age, they both retired in their early 60s and have a mortgage on their main (and only) residence which runs until they are 75.
For those with school-age children, the earnings band between £50k and £60k sees the loss of child benefit, giving an effective tax rate on this £10k of:
Child - 51%
Children - 58%
Children - 65%
Children - 72%
Etc.
This isn't correct.
The loss of personal allowance isn't all at once on hitting £100k, it's lost progressively between £100k and (roughly) £123k. It's always worthwhile earning more!