As a former pensions consultant, I heartily agree.
The pensions industry has been saying this for more than 20 years now but no government has had the courage to do it.
The State pension was set up on three basic assumptions: (1) More men worked than women. (2) A man's pension would be paid, on average, for 15 years after he retired at age 65. (3) Most wives were 5 years younger than their husbands so giving them a retirement age of 60 meant, generally speaking, both pensions would start in the same tax year.
As time has passed none of these assumptions are valid any more. The whole system needs to be reset and, actuarially speaking, a State pension age of 75 is perfectly reasonable.
Given the damage done to the UK private pensions industry by the Tories over the years (Nigel Lawson virtually wrecked final salary schemes single handed with his "105% surplus limit") it's a tad ironic that a right wing think take wants the private sector to pick up the slack.