How is it hypocritical with the amount of research, studies and effort put into this?
Except there aren't...
There are practically no "studies" or "research", it's just data modeling. They take statistics, run it against models they generate and if they don't like the output they adjust the data until they get the output they want.
That was the biggest part of ClimateGate emails, direct communications between various high level scientists on how to hide trends that didn't agree with their prejudiced opinions. The data they like to use is based on a handful of weather-stations and manipulated with the original data hidden away. Satellite data, which is publicly available, and far more accurate then land based stations, has disagreed with the results of all the models. The models say year 2016 is 2C higher, the Satellites read 0.5C colder, the AGW crowd pretends the Satellites don't exist and insist it's 2C higher and it's "the hottest year on record".
As of now there is exactly zero evidence for causation and weak evidence for correlation.
Interesting note about the Satellite data and why it's publicly available in all it's forms. Awhile back when NASA started using Satellite data for weather models, the leftists were worried a future Conservative government would bury the data and harm their green agenda pushed for the raw data to be made publicly available without question or administrative roadblocks, that request was granted. Now that same ruling is preventing them from "adjusting" the archived satellite data or restricting it's access. This has allowed a large community with access to their own computers to easily follow the trends and see what's really happening. This group is what's been fueling the anti-AGW movement, of which a significant number are scientists themselves.