He has a habit of accusing everyone who values evidence and / or doesn't agree with him of "scientism".
Scientism as he uses the word is a pejorative term for somebody who doesn't respect soft thinking, that is, somebody who requires sufficient evidentiary support for a claim before believing it. Like many believers, he sees himself as having a special way of knowing not available to the critical thinker which I haven't seen called the Holy Spirit, but serves the same role for him as a source of special knowledge.
When he's in a more charitable mood, he calls such people materialists, but he also likes to imply that they have an excessive reliance on science when he uses the word scientism.
People don't worship science.
That's what scientism is to that poster. He is offended at having his sweeping, unfounded, unevidenced claims about reality rejected by critical thinkers.
people don't have a sexual relationship with G-d .. so not "a person" in that sense of the word.
That's how you define a person - someone you can have sex with?
Whatever, you'll have to take that up with the faithful who consider their god a person. I don't, although I would agree that it has a personality as described, and not a very pleasant one at that by my reckoning.
as far as insurers are concerned, they are "natural"
That doesn't matter. Insurers don't define anything except within their businesses.
Your belief seems to suggest that things have evolved the way they have, just because "they can".
That's how nature works. A landslide occurs whenever it can. Water freezes whenever it can.
There are alternative hypotheses also.
To LUCA? Yeah, there's biblical creationism, but that hypothesis is incorrect.
The evidence for a LUCA for the entire tree of extant and extinct life is robust:
"The universal genetic code is arguably the most robust evidence for the existence of LUCA. Virtually every organism, from the tiniest bacteria to the largest mammals, uses the same genetic code. This means that the triplet sequences of nucleotides in DNA, called codons, code for the same amino acids almost universally."
That code is a substitution code, meaning that it's arbitrary and could have been any other number of ways. UUU is arbitrarily connected to lysine, and CUA to asparagine. The same series of amino acids would be assembled if the DNA read GAU.AAA and CUA were connected to lysine and UUU to asparagine.
By contrast, the connection between AAA and UUU or GAU and CUA is NOT arbitrary. That's physical and depends on the conformation and charge distribution of those nucleotides.
