The whole royalty thing is weird. For example, France abolished its royalty system more than 150 years ago. Yet we still have Frenchmen who call themselves “counts” based on some ancestor.
Those folks should be laughed at. Instead, many people take them seriously.
But wait. It gets even sillier. There are sites on the Internet where you can buy French titles of nobility. They are certainly scam sites, but they wouldn’t exist if they had no customers.
I’d like to say more, but I’ve got to get my bid in for a French barony.
For $75 two people in your family can become a Lord Or Lady of Glencoe
https://www.highlandtitles.com/buy-a-plot/
because the final end of monarchy in france was the end of the second empire in 1870 (which is more than 50 years after Waterloo), it all ended with a whimper instead of with a dramatic rejection by the people. So there was no strong reason to clamp down on anyone who maintained some monarchist trappings, like the casual continuation of some titles. So you get people playing their games and if you possess a title you can raise your status or make a profit off of it, so why not do that?
There’s one for Scotland too, where you can guy a square foot of land and be a lord/lady. LOL