For the sake of this argument, I am going to assume that since everything started from an explosion and that there was nothing around to direct that explosion, that it spewed matter in all directions. Now, I am going to show you a sketch and to keep it simple, it is only in 2D, but the same would apply if I had made it in three dimensions. After you look at this sketch, I am going to explain why they may be wrong in their conclusions of the age of the universe.
The big red circle is where the “big bang” occurred. The blue circle is our own galaxy and the magenta circle is the far away galaxies that they just spotted. This sketch shows distance-1 to be equal to distance-2. That would mean that our galaxy and the far away galaxy are the same age but the direction of their travel was different. So, when the far away galaxy is viewed, it is further away from us than the original point of the “big bang”. Now tell me, how can astronomers tell how old the universe is just by observing another galaxy. In my sketch, the far away galaxy is 1.6 times as far away from us as the “big bang” and therefore would appear older than the beginning. Does this make sense to you? Maybe I just woke up too Dizzy this morning. . .
You all have a good day and a good week, you hear?