Your talking about DB schemes not DC schemes.
Giving someone a payrise who is on DC only affects CONTRIBUTIONS
Yeah he probably meant final salary schemes. I've seen this happen in my company final salary scheme when they had one. Of course not everyone got that treatment, only those who were in the clic. It's irrelevant now as the final salary scheme went years ago. The boomers made their wedge then dropped it for everyone else.
"Damien talks money" you tube guy put a solution forward in one of his videos - get rid of state pension for anyone born today and instead give them £5k in a stocks pension fund which will grow for 70 years before they need it. Seems a good idea to me.