They have. Distance calculations are off, they know it, and trying to make it more accurate. They can’t use Einstein because it’s too complicated so they use ap

They have. Distance calculations are off, they know it, and trying to make it more accurate. They can’t use Einstein because it’s too complicated so they use approximations, and they know it. If the basic assumptions of your calculations are wrong it’s not surprising if your conclusions are as well. Here a link for one of the simple explanations they didn’t take into account leading to wrong redshift measurements https://www.mdpi.com/2571-712X/7/3/41 https://www.mdpi.com/2571-712X/7/3/41