Who cares about per capita emissions? Billionaires could have 1000x the emissions as normal people, but there are so few of them, cutting their emissions down to zero would have absolutely no impact on climate change.
Which do you believe is likely the lower hanging fruit, has a higher return per dollar spent and is likely to be more ethical and less invasive?
So yeah. I care about per capita emissions on the grounds that things need to change fast, and adjusting the lifestyle of a few million is radically easier than wiping half the planet off the emissions map.
Billionaires aren't the 1%, they're the 0.00003%.
Top 1% globally is basically anyone making more than $100k/yr.
If you deleted all billionaires from existence, it would make no impact on climate change. If you deleted all 1% ers and left the billionaires, there will be a huge improvement in climate changing emissions