I agree with whoever said that once again the Harkles narcissic rage has made them use the 'titles' move. The flatpacks were always entitled to use the titles because Chuck had done nothing to stop them, so it was only a matter of time before they used this move to piss us off.
This is their silly fight back against the South Park humiliation and losing Frogmore, and plays to the sugar nuts.
Losing a domicile in the UK is going to have implications for them (hopefully) with regard to tax etc.
Fark and legless won't be able to use the titles in the US anyway
The Harkles are desperate for some positive publicity, hence a christening for legless Lil and this move against Chuck because he made no announcement about the kids.
I wonder if they had caught wind of the fact that Charles was considering taking the titles away so this was a pre emptive strike to tell the world. Now if Chuck removes the titles he will look like the bad guy.