I agree it’s good that Prince Edward and Sophie are now Duke and Duchess of Edinburgh. They have given loyal service to the Queen, and were clearly very close to her and Prince Philip.
I have seen on threads disparaging comments about The Dukes of Kent and Gloucester (and Princess Alexandra) being “hangers on” despite being .the grandchildren of King George v and Princes from birth. Both inherited their Dukedom’s from their fathers (the Kings sons) and were respectively 7th and 4th in the line of succession when Princess Elizabeth became Queen. They, along with Princess Alexandra, have provided dedicated service to the Crown but slowly they have moved to 30th (Gloucester) and 40th (Kent) in the line of succession.
The same will happen to Prince Edward, DoE who has already gone from 3rd to 13th. Returning the title to the crown rather than making it hereditary is a very sensible and pragmatic move.
@Roussette as you point out Nerissa Bowes-Lyon was born who 1919.and Katherine Bowes-Lyon was born 1926, the same year the Queen was born. At that time the world was a very different place and the Queen would have been excluded from any conversations about her cousins whilst she was growing up. She was 15/16 in 1941 when they were placed in the mental hospital so would not have been party to the decision nor to the incorrect info about Nerissa’s death.
I certainly have some cousins I am much closer to than others, but even those I am close to I would not feel comfortable interfering in decisions they have made about immediate family members. Offer help and advice, if asked, but not question their decisions.