The other issue is that focusing on something like this megamansion (as grotesque as it is anyway - seriously a lot of these rich people are just tasteless losers) leads down to a never ending condition where you just never do enough to satisfy people who have no interest in changing their habits anyway.
If Gore sold his megamansion they'd say "hey you are still flying", if he stopped flying they'd say "hey you're still driving a car", if he stopped driving a car they say "hey you're not growing your own vegetables", if he started growing his own vegetables they'd say "hey the tools you use come from a carbon emitting supply chain" and if he stopped using tools and made his own they'd just keep on and on and on forever until we get global warming anyway and so many people are screwed. There's no genuine interest in solving the problem, they just want to distract you.