"It receded from serious consideration in the early 1980s after inflation theory emerged as a solution to the horizon problem, which had arisen from advances in observations revealing the large-scale structure of the universe. In the early 2000s, inflation was found by some theorists to be problematic and unfalsifiable in that its various parameters could be adjusted to fit any observations..."
Ex nihilo nihil fit.
And the observational evidence is interpreted as pointing to a Big Bang. There are other interpretations which don't require a finite age or an initial singularity.
https://en.wikipedia.org/wiki/Big_Bounce