Satellite data provides continuous high resolution temperature information across almost all regions of the Earth, and across all the layers of the atmosphere.
By contrast, surface data provides spotty low-resolution data which is UHI contaminated, tampered with, and scientists say suffers severely from time of observation bias.
Scientists of course choose to use the meaningless surface data, because the satellite data doesn’t show any warming.
Never mind that NASA says the satellite data is more accurate. Funding is the important thing.