There has been a shed load of publicity about it on the news and in papers at the time of the 1995 Act and the 2007 Act. The vast majority will have known through tv, newspapers, radio and social media.
Was the argument about the acceleration of the process by a couple of years by the Coalition of 2010 and not being notified in the prescribed way? Again I recall loads of publicity and uproar from women's pressure groups at the time as well as discussions across various media. I have some sympathy, but not a lot as state pension is not a right but a benefit (a hole new argument on that can be had mind), changes have been made and publicised previously affecting all pensioners. I as a man, was never notified formerly by government about the rise above 65 but I knew I’d had it put back and would need to plan ahead.
I get the anger as women may not have had years credited with NI for a variety of reasons, which may be unfair i.e homemakers who had Child Benefit paid to husband and various other reasons. I do think they should be able to buy credits for missing years to help their position no matter how far back although many wold struggle to do so. However, it also rather begs the question what is the point of an ombudsman if their findings can be ignored. I get the country is a mess financially thanks to mismanagement under all governments over time, but that will never change moving forward.
The government does seem keen to shoot itself in the foot though but there is no magic money tree and I fear they may cause a recession if not careful. Every working ordinary UK resident will continue to pay more for less as always, no matter who is in charge.