Step down from what exactly ? Being the Queens husband ?
This reminds me of what my old Dad said, many years ago, when Princess Margaret scalded her foot, while on holiday in the Caribbean. " on holiday from what ? "
For the record, he done a sterling job in the past but he should have retired many years ago. There are plenty of Royals left to take over his duties, and there always has been.
Perhaps Betty can now retire to Balmoral and let that son of hers get on with his allotted job, before he snuffs it.