My history’s fine. Windsor Castle, among others, is chock full of relics and tombs from every century of British history with no distinctions made between Tudor, Stuart, Plantagenet, Saxe-Coburg-Gotha et al. The line of succession from William to Elizabeth II is and has been meticulously documented.
The point, of course, is that the monarchy’s history is well known and that they have enjoyed what amounts to free publicity in the form of media coverage, historians’ study, etc. since the Battle of Hastings. It was, is and will forever be more extensive and lasting than popping into a food bank kitchen to pretend to cook organic potatoes for the sole purpose of a social media post.
There was no media coverage of the Battle of Hastings. The first true British newspaper didn’t come out until 599 years later. Sorry, there was no television or internet. It’s actually scarcely turned up in British literature. Shakespeare and Chaucer never wrote about it. A deposed bishop wrote about it at the time, but it never made it to the big leagues.