Wesson used a de Sitter universe merely to demonstrate the relatively small contribution of redshift compared with the expanding universe's finite size and age. Of course both play a role in the resolution of Olbers Paradox. The post I originally responded to said Olbers' Paradox "...is solved...
This is incorrect: the metric expansion of the universe is only one( relatively minor) contributor to the resolution of Olbers' Paradox. In a static universe the night sky would be brighter by less than two magnitudes according to Wesson Ap. J. 367, 399, 1991). Conselice et al. (Ap. J. 830...