And immediately we had such a devastating tax raid made on our pension schemes that the final salary schemes all closed and personal pensions were seriously damaged.
This is true - but the raid is not the only cause. The rot in pensions had started with Thatcher's introduction of MFR - which limited how many assets a pension scheme could own as an attempt to stop companies using pension scheme to reduce tax bills. (Actually introduced by Nigella Lawson's dad, as I recall.)
That drastically changed how companies provided pensions and started the move from DB to DC - limiting how companies invested in pensions so that they could not put more in when profits were good (they hit the limit). That meant lots of companies simply stopped paying into pensions when the going was good, so that they didn't attract this extra tax. And led to a shortfall when it came time to pay those pensions - so they shifted to DC as a way to reduce the risk on them.
In 97 Gordon Brown abolished the tax relief on pensions - which did have an impact and was daft considering the small return it gave the gov - but was also a continuation of the reductions in that relief that has started under the previous Tory government.
This was further compunded by the International Accounting Standards Board introducing new regulations that forced companies to declare pension liabilities as part of their financial reporting - which meant any still with DB looked like their were in the red, not the blank - so they stopped doing DB and moved to DC which made their numbers look better.
It's easy to say Labour single handedly ruined DB pensions, but this massively simplifies a complex set of circumstances that was brought about by the Tories, the IASB and then added to by Labour.