I agree. That's not how old royals work. And she probably still remembers the abdication of her d-bag uncle. Not the same thing, of course, but still ...
I don’t think anyone would hold it against her if she let go at age 95. Every day she remains she sets a new record for longest reign in British history. She is closing in now on 7 decades on the throne. If she lives as long as her mother she’ll be over 100 soon enough. Here are the trivia facts from wiki.
Elizabeth II: the longest-reigning monarch
On 9 September 2015 (at the age of 89 years, 141 days), Elizabeth II became the longest-reigning British monarch and the longest-reigning female monarch in world history.[3][4] On 23 May 2016 (at the age of 90 years, 32 days), her reign surpassed the claimed reign of James Francis Edward Stuart (the “Old Pretender”).[5] On 13 October 2016 (at the age of 90 years, 175 days), she became the world’s longest-reigning current monarch (and the world’s longest-serving current head of state) after the death of Bhumibol Adulyadej (Rama IX), King of Thailand.[6][7]
If she is still reigning on –
18 July 2020 (at age 94 years, 88 days), she will have been queen for 25,000 days.[8]
6 February 2022 (at age 95 years, 291 days), she will celebrate her platinum jubilee, marking 70 years on the throne.[9]
27 May 2024 (at age 98 years, 36 days), she will be the longest-reigning monarch of a major European country, surpassing Louis XIV of France, who reigned for 72 years, 110 days.[10]