OK, I get confused but, this my poor understanding, and based on high earners living in the South East or London with a big pot:
You pay into your pot tax free, but have to claim the additional 20%, but can be in a position where you are over the thresholds, and pay an additional 5%.
You can take 25% from your pot tax free
When you draw down or have an annuity this is taxed income
If you have a large estate, house worth a million, pension pot of a million, your estate will be taxed if passed to your children
Additionally your children will then be taxed when they take the drawdown as income
If your estate is over 2 million you lose your allowances under a taper system
Someone, somewhere, calculated this as a tax take of 80+% in the same money.
I think.... I will try to find the analysis where this was shown