Looking at the top slot on the list, Thomas Siebel, he uses ~300x an average American. There are maybe 100 names on this list? And each uses less, so ballparking, lets call it ~15k Americans worth of CO2/year.
Yeah, thats a lot, but in the grand scheme of things its a drop in the bucket. If 15k Americans disappeared off the face of the earth today then nothing would change in the climate crisis.
To me this just tells me that we need to be focusing down on the bigger sources (big companies that make lots of CO2)