I personally think they should all be addressed by the titles they've worked lifetimes to earn, that anyone who holds a formal title such as Doctor should be addressed as such in a non-casual/non-informal environment, but I'm also willing to entertain that this is a possibility for why the difference may exist between Dr.'s Sagan, deGrasse-Tyson, and Bouman. And yes, there are probably, most likely others that are far less nuanced and charitable.
Would you be willing to entertain that viewpoint?
Nope.
I think you are now beating a dead horse with this argument.
Apparently that is a problem for some in this community which is a damn shame.
Titles in general seem quaint and obsolete to me (and to many others). Seems like a relic from centuries ago, like from monarchies. I don't see why not participating in this is a "problem" or a "damn shame".
One can make intelligent arguments about the use of such titles. These aren’t.