Yes it is, and yes, billionaires need to disappear

Having said that, we may not have an option. We've allowed assholes and billionaires to destroy the planet for such a long time that we will likely need measures beyond capturing CO2

Hell, capturing CO2 itself doesn't make much sense until nearly all CO2 generating power sources have been replaced, and we're not nearly close to that. And even when we do start really capturing CO2, if we spend half the world's energy budged in that, we'd still need to keep that up for decades at least to get to acceptable levels. Yes, we've been pumping CO2 into our environment at alarming rates for a fucking long time, and all the energy we got in exchange also needs to be spent (plus a whole lot extra) to get it out of the atmosphere again.

One of the things we can do is using the same pollutants from back in the 80s that caused acidic rain. Obviously this isn't what you want, but one of the side effects nis that it cooled the planet, which IS what we want. This could buy us maybe a few decades of reprieve