They're always working with the data they have. When new data arrives, from new telescopes and better technology, what do you suggest they do? Supress the new information? They don't do that. They welcome the opportunity to revise their understanding, in the light of the best available information. Why do you find this objectionable?
I don't.
Maybe it's how you worded it or how I read it, but you made it sound like that it was now pretty much a settled thing because so many of them agreed with each other.
When in fact many things that seemed settled 20 years ago..... today aren't.
New information will show up and everything will change.
I try and keep up with all this but there are still huge unsettled speculations that this is all built on.
So you can read all you want but you'll be much more ignorant when you finish than when you began.
Because you will have a better feeling for how little we really know.
And that's not a bad thing.......just a little humbling.