Errors in the Steady State and Quasi-SS Models

http://www.astro.ucla.edu/~wright/stdystat.htm

In this article it is stated:

"Furthermore, since the radius of curvature of the Universe can notchange, but must expand, the radius has to be infinite. Thus the Steady State model has flat spatial sections like the critical density Big Bang model. Since the expansion of the Universe spreads the existing matter over a larger and larger volume, but the density stays constant, the Steady State model requires continuous creation of matter. The average age of matter in the Steady State model is <t> = 1/(3*H_{o}) but some galaxies are much older than the average, so the age of the globular clusters can be accommodated if the Milky Way is older than the average."

The following message is not clear to me:

The average age of matter in the Steady State model is <t> = 1/(3*H_{o}) but some galaxies are much older than the average, so the age of the globular clusters can be accommodated if the Milky Way is older than the average."

In one hand they claim that there are galaxies which are much older than the average calculated age, while in the other hand it is stated that the Milky Way is not old enough (therefore,the age of the globular clusters can't be accommodated). Why? Did I miss something? Can someone explain this contradiction?