When Taylor Swift’s JET ALONE produces more carbon annually than 1000 individuals driving their car daily, it doesn’t matter one iota what kind of vehicle the average joe drives.

Amazingly, you're missing your own point. If it's not about individuals, well, even Taylor Swifts jet by itself is a rounding error when considered in the context of global emissions.

But more importantly, it seems like you are contradicting yourself in a pretty fundamental way. You are perfectly comfortable taking Taylor Swift's emissions and holding her responsible for those due to her belonging to a class, namely folding her into membership of "corporations/billionaires". So Taylor, insofar as she represents the collective actions of that class, gets moral responsibility.

But individual consumers are also contributing significant emissions when conceived of as a class, which is a way of conceptualizing individual actions that, by your own Taylor Swift example, you are perfectly comfortable doing.

It doesn't mean it's the only thing we should strive to change, but it definitely is one of them, because the global collective emissions of people using internal combustion engines is in fact a significant input into CO2 levels, and we can reason about these things at those scales if we choose to.