Sagan was political, more so than Tyson. Sometimes science intersects with politics in ways that can’t be avoided. Nuclear proliferation, land management, etc. So how can you just turn off any scientist who touches politics? Or is it just a certain kind of politics that turns you off?
Sagan always felt respectful, while Tyson feels like he’s looking down on everyone around him. Some of his hosts have also said he’s a huge jerk. I think he would be a very bad role model for the field.