Now that there is a growing backlash, the UK authorities are rejecting that they ever were trying to achieve "herd immunity” by allowing 60-80% of the “low-risk” population to be exposed to SARS-CoV-2.

However, the article you link to does not differ in its details from what authorities such John Edmunds a professor Mathematical Modelling of Infectious Diseases, London School of Hygiene & Tropical Medicine said 2 days ago [0] and Ian Donald Professor Emeritus from University of Liverpool wrote the same day [1]

These authorities are backpedalling in the face of deserved widespread criticism. But rather than changing the course of UK policy, they are only disavowing the phrase “herd immunity”.

[0] https://m.youtube.com/watch?v=C98FmoZVbjs

[1] https://mobile.twitter.com/iandonald_psych/status/1238518371...