OK, good post, it's got me thinking instead of writing out a knee-jerk response......I don't think the question can be termed 'irrelevant', more academic is maybe a better description.
And in that sense, you have a point, but you are suggesting such a question is devalued because of the possible answers, both of which ostensibly negate the question asked.
My only room for manoeuvre here seems to be on the latter option, of you suggesting those circumstances before the big bang are 'something completely beyond our understanding'...
I would propose there is a way we might understand circumstances before the big bang, whether its through mathematics or scientific exploration, it matters not, but I think having come so far, I cannot for the life of me, believe there is something there that we can't get some sort of handle on .....ironically enough, science is almost there, it's just a matter of time