It’s all a con though. That’s the point. You don’t have 20% added to your pot. The schemes are all paying for the pensioners of today who retired at 55. It’s all smoke and mirrors. You can rest assured that public sector workers are on much, much poorer terms now and by the time they come to retirement the whole scheme will probably have collapsed.
The 20% matching is a con. It is crippling staffing costs in the NHS, defence and education. Many today will never see it. It’s not as great as you think which is why no-one stays for it anymore if they are qualified.
There is no pot. ALL of the money paid in goes to pensioners today. Not your own pot. The terms of the pension are always being changed and reduced. I really wouldn’t be worrying about it to be honest. It is also why I am using a SIPP and we are ploughing into my husband’s pension. One, I will probably leave teaching and two, I doubt I will even have a public sector pension despite paying in 10% a month. They will probably change it again.