If a married person, man or woman but usually a woman, does not qualify for at least 60% of the Basic State Pension, the spouse's contributions can be used to top it up to 60% provided that spouse has reached State Pension age and has claimed it.
I've not listened to the programme so I don't know what it covered but by paying the voluntary contributions it may mean a person qualifies for at least 25% of the pension. If a person is entitled to a lower percentage, NO basic pension is payable under present law.