Nothing in my post suggested that I believe in a 6,000 year old universe. You’re assuming that.
HOWEVER…
Just as there is compelling evidence to suggest evolution and an old earth, there is compelling evidence to suggest a created Adam & Eve, a flood, and a younger earth than is currently posited and assumed by the secular community. Unfortunately, the evidence is only found on sites which posit such things, so you have to visit those sites to see it (duh!).
Here is only one article of many, many scientifically-based articles and videos which point to the possibility of a young earth:
icr.org/article/7874
As you say, the Catholic Church does not require us to believe in a young earth. I don’t know if I do or don’t. I’ll admit that I would love to see conclusive evidence that proves the six-day creation, and the 6,000 year old history as indicated in the Bible. But, I also am someone who needs some pretty danged conclusive evidence. Heck, it took me 20 years after my marriage to my Catholic wife to become fully convinced that the Catholic Church is the one founded by Christ, etc., etc., etc. I did 3 years of hard-core reading, hours a day. Encyclicals, apologetics, etc. As for now, I’m only in the “Hmmm, that’s interesting” arena as regards such evidence. I’m currently open-minded both ways.
The point I am trying to make is, there are folks with science degrees who provide a great deal of evidence about creation, the flood and a young-earth, and it should be quite obvious to anyone that the only place you would find such material is on a creationist-oriented website. So, again, to ignore evidence that doesn’t fit a pre-conceived conclusion is not true science. Sure, some of it is pseudo-science, but you’ll find the same thing in non-creation/evolution-oriented circles.
I strongly, strongly, encourage you to watch Ben Stein’s movie, “Expelled,” which clearly demonstrates how creation-oriented scientists and teachers are systematically pushed out of the mainstream. One of the root beliefs of Communism is that there is no God, and that the State is supremely responsible for our dignity and well-being. Quieting anyone who dissents from that view is a major goal of progressivism. Quelling debate about creation, evolution, etc., is not education, it is indoctrination.