By your argument, because Uber/Lyft provides better customer service overall compared with Taxi service which is why they are commanding such a large market share, that is a bad thing because people are taking more cars over mass transit as a result.
Uber pool might lower the amount of greenhouse gases compared to everyone using individual Ubers, but that is a drop in the bucket compared to the increase from people using Uber instead of public transit
Why not argue for doubling taxi fares and banning Uber, equivalents altogether and force anyone without a private vehicle (which is the majority of people in Manhattan and perhaps even NYC) to take mass transit? It is a silly argument. Because Uber is provider better customer service at a lower cost, that is a bad thing? Really?
And even more in bad faith is your constant assertion that people who are not fans of Uber are somehow against poor people. Your entire second paragraph is filled with this. Based on that, I could easily say that, because of your comments of Uber love, you’re a huge fan of the kind of office culture that Susan Fowler wrote about. Would it be accurate? Probably as accurate as your assertion that those who are against Uber is against poor people.
But it's MORE greenhouse gas generated than if all passengers took the subway.