If the following article on "phys.org" is accurate, what new model of the formation of the universe could be considered besides the Big Bang?

The article is this: https://phys.org/news/2020-06-distance-bolster-basic-universe.html

Basically, it says that, the Hubble constant latest measurements on the standard candles and the gravitationally-lensed quasars, which relates to the expansion rate of the universe, gave a value of 73–74 kilometers per second per megaparsec. However, predictions of the Hubble Constant from the standard cosmological model when applied to measurements of the cosmic microwave background (CMB)—the leftover radiation from the Big Bang—produce a value of 67.4. This means, of course, that the universe is expanding faster than expected, in other words, the “tired light hypothesis”.

Somebody could explain to me the meaning of the difference between these numbers? And, if they can’t be explained in any other way, what alternative model of the “birth” of the universe could be formed from this?