TOPIC: Sediment trap location w/ gas flex line

Here is a pic w/ comment at a recent new home move in inspection where I called out that the sediment trap / drip leg should be before flex line (low side).
Thoughts on this, please.
I had a debate w/ builders superintendent, who insisted that it should be right by unit, which as seen is on the high side of flex- not making sense to me since sediment, condensation, etc would settle better on low side of flex.

Joe, I think as long as it is before the appliance it serves its purpose so the trap in either place would be fine. If a bit of sediment collects in the pipe before the flex line I don't think it won't do any harm.

Yes but Burt my point is that before the flex, as it is lower will collect the most sediment, no?

Before would be a more logical spot, that's for sure.

Joe... did you see my response on the 'other' MB?

Yes Jeff, you think it should be on the closer side, but my reasoning is that to the outer part of the flex is lower, thus better serving the purpose of the trap. Realistically either way is probably OK. I don't think that I'll call that out any more if it's either location. I'm just glad to see the drip leg. San Antonio area jurisdictions don't really enforce it. So the builders on my new construction inspects bring that up, that the city accepts it without. Well of course that doesn't make it right. After putting it in my report and/or discussing with my client that the manufacturer probably requires it and may void the warranty if not installed, the builder gets it put in at that point pretty quick.