(Wiki)
In the 1920s and 1930s almost every major cosmologist preferred an eternal steady state universe, and several complained that the beginning of time implied by the Big Bang imported religious concepts into physics; this objection was later repeated by supporters of the steady state theory.[45] This perception was enhanced by the fact that the originator of the Big Bang theory, Monsignor Georges Lemaître, was a Roman Catholic priest.
First of all, in the 1920's and 1930's cosmology as a science was still very, very young. It wasn't until 1922-23 that Hubble was able to show that there were objects outside of our galaxy. The red-shifts for galaxies wasn't observed until 1924, and the connection between red-shifts and distance wasn't even conjectured until 1931. But even this was far from clear: only the closest galaxies had their distances measured and the uncertainties in those measurements were huge. As late as 1941, Hubble claimed that the red-shift evidence didn't support the expanding universe theory.
When the evidence is in such a state of flux, it is natural and even important that a wide variety of ideas be considered, debated, tested, and argued. Contrary to what you seem to think, the Steady State theory never had a huge following. Among other things, it demanded a continuous production of hydrogen out of nothing. That was a HUGE problem.
(Hoyle) found the idea that the universe had a beginning to be pseudoscience, resembling arguments for a creator, "for it's an irrational process, and can't be described in scientific terms".
Yes, but Hoyle's ideas were not very widely accepted because they required spontaneous creation of hydrogen throughout the universe at a regular rate. That violation of the conservation of energy was seen as very problematic.
In the mean time, the BB formulation was gradually gaining evidence, and therefore respectability, while the Steady State theory was losing that same respectability. In particular, the discovery of quasars showed that the universe has fundamentally changed over time and the work of Gamow and others connected a hot-Big Bang to the abundances of the light elements.
In other words, the time period you are talking about is one where the available evidence was minimal and recognized by all sides to be such. A LOT of different alternatives were discussed and compared and more evidence was actively being sought out. But the Big Bang scenario was certainly considered seriously quite early on and LeMaitre's religion was not a barrier to the adoption of the ideas (except in a few cases), while the lack of evidence meant that no single viewpoint was clearly correct.
That, by the way, changed on the discovery of the background radiation, which was something the Steady State theory could not explain.
In other words, cosmology was doing exactly what any respectable science *should* do: it wa slooking at all the possibilities and comparing their predictions to the evidence while seeking out more evidence.
The 2nd is more of an argument than a claim.. but we know that creative intelligence can produce genuinely novel information systems like those necessary to underwrite physics etc.
We know of no such thing. For example, creative intelligence has *never* been able to change the basic laws of physics.
Whether or not purely blind processes can achieve the same... far less be a more probable explanation... it's an interesting proposition but remains philosophical speculation at best
On the contrary, we know that *is* possible from a wide variety of models we have formulated.