Perhaps this quote might help illustrate where Brian2 disagrees with you:
Yes, we are in the various possible sequences of processes of determining the chemistry of how an where abiogenesis can take place. Yes, there are still unknowns that have nor been fully worked out, but science is progressing to resolve these problems.
I've questioned that one. I'm doubtful whether science will ever know how life originated. All that hypothesis and experiment can tell us today is (at best) how it
might have happened. But given that these events appear to have happened some 3.5-4
billion years ago, and given how little physical evidence exists from that time, it's doubtful whether science will be ever be in any position to determine precisely how it
did happen.
But Brian2's point is more fundamental than that.
All the evidence at present has determined that abiogenesis took place naturally.
That's where Brian2 raises his objection.
Science's
methodological naturalism is an
a-priori heuristic principle that says that science will only admit into its thinking information obtained by empirical means (and mathematics, a glaring problem case).
So science produces hypotheses about the origin of life that only admit natural causes accessible to the human senses (and their instrumental extensions).
Then laypeople are presented with conclusions such as "All the evidence at present has determined that abiogenesis took place naturally." Or perhaps the even more aggressive and less qualified claim that 'Science has determined that abiogenesis took place naturally'. An a-priori methodological premise that went in one end becomes atheist rhetoric when it comes out the other end. Science has supposedly explained (or is very close to explaining) the origin of life and God plays no role. Another blow against God.
I think that Brian's objection is that
this is circular reasoning if science decided at the very beginning to only consider empirical information, natural causes etc. What started out at the beginning as a methodological premise has somehow transformed itself into an ontological conclusion: "...has determined that abiogenesis took place naturally". Somehow
the original methodological naturalism has slippy-slid into metaphysical naturalism.
I think that Brian is arguing that's an illegitimate move, and I'm inclined to agree with him. At the very least, addressing his objection calls for more than insults and bluster.
Of course, God may be the Creative cause, and if this is true God Created through Natural Laws and natural processes that are the same as science observes and determines through scientific methods. If God is the Creator, God does not Create contradictions.
How could one know all that?
We know that abiogenesis took place either volcanic or mid ocean ridge subsurface environments like gas vent caverns, What is known is that at the time continental drift and continent formation began with the first mid ocean spreading zones the first most primitive life is found in subsurface cavern deposits.
Those are hypotheses, not knowledge. Hence Brian's point about speculation. In my opinion they are very plausible hypotheses and I accept them myself as legitimate hypothetical possibilities. But when their hypothetical nature fades away and they somehow become "facts" that science has somehow "determined", then critical objections are called for in my opinion.