That’s a fair point. But there are many many pensioners that aren’t in this boat and they are probably the ones shopping at Iceland needing a discount.
Also you are forgetting that any income over the tax free allowance gets taxed so by the time pensioners get their state pension it doesn’t take more than a few K to be paid from the private pension before pensioners start losing 20% off their private pension withdrawal.
No, I’ve certainly not forgotten that income tax exists. You were referring to 400k in cash so I just commented on that.