Presumably the staff of the two separate forensics teams that found no DNA on the split condom were quoted in the 100 page police report are qualified.

They did find DNA in the other woman's condom, but that condom was not split and there was no claim by her of condom sabotage.

No, I mean, he's not qualified to interpret the findings. It's far from obvious that a negative DNA test result means "definitely didn't wear the condom". (And more broadly, such a test is only informative if you can be sure that no other condom was used, which you probably can't.)