At best, it demonstrates intellectual laziness, at worst a political / ideological conviction, neither of which is a hallmark of a good scientist.
The scientist provides a scientific explanation (“Recombination is naturally very, very frequent in these viruses, there are recombination breakpoints in the spike protein and these codons appear unusual exactly because we’ve not sampled enough.”).
But let's flip this round as the author here is openly heavily weighing his dismissal of scientific support for natural origin by claiming that it is supported by ideological reasons. That's exactly the same as someone dismissing the lab claim for ideological/conspiracy reasons, just the other way round. Natural origin doesn't support the author's ideology, so he dismisses it and has a bias towards evidence for lab origin. The author has previous done this exact some thing with his previous writings, taking a fringe position and dismissing scientific objection that aligns with the scientific consensus as ideology. Basically, this is a subjective opinion piece, not objective analysis.
What makes you think that they are a concept developed by the CIA?
How many people (lab technicians, doctors, 'police') would know it is from a lab and are hiding that information? If the answer is 'hundreds' then the chances of it being kept hidden are very low. That is what labeling it a conspiracy theory means.