| Please tell us exactly which one of those has said mystical "ring" of deliberate lies, and why.
| 2) The data for anthropogenic warming is weak. TRUE
This one. It's a deliberate lie.
There has been a very large increase in greenhouse gases in the industrial period. It is from fossil fuel mining and burning. This has caused changes infrared emissivity in the atmosphere---this is a measured fact, that the atmosphere is shining more in infrared. It is physically impossible for the climate not to warm.
Extensive data, geological and biological, show this is what has happened.
All other plausible non-anthropogenic mechanisms have been investigated and do not explain the observed data. Every aspect has been investigated every which way for decades.
| 3) Those who disagree with it are ex-communicated from the scientific community. TRUE
At some point, which is about now, they don't have good arguments or data. When they try, their arguments are quickly refuted. It now appears that they are willfully incompetent and motivated by achieving a non-result instead of actual scientific inquiry.
Particle physicists who disagree with conservation of relativistic momentum are similarly "ex-communicated" as they have nothing productive to add.