I love Tyson because he is wonderfully engaging and does not take himself too seriously, he allows for fallacy. I think he values himself, which he should
Sagan pretended humility. I do not care for humility, humility in my view is not a virtue. Humility that is not genuine is even worse.
Do not ask me to go into detail about this, I can not point to single incidences, it is just an impression I got over the years. Sagan started to grate on my nerves with this after a while. I also enjoyed watching him for the first few times, until I became aware of this.