That's a ridiculous thing to worry about. Individuals, even the ones with boats and houses, aren't what's driving climate change. All the time and effort you spend playing "Solar Panel Police" would be much better spent attacking the environmental harms caused by industry. Could this guy afford some solar panels? Probably, and sure every little bit 'helps', but it seems so petty to bitch about this one guy when there are so many others causing problems that are so much more impactful.
Seriously the amount of gloating is kind of absurd. Here in Australia we have "tall poppy syndrome" where we cut people who are above us, but this guy loves to brag about the crap he has.