No, it does not follow from this that accelerants should not have been tested for. I am not in the least interested in who "they" are, but whoever "they" are, "they" are not a logical reason for not conducting proper forensic tests.
This has been a thread about WTC 7. You are speculating only.
I am proposing that a credible investigation into the collapse of WTC 7 would involve forensic tests for accelerants.
Okay, sorry if my attempted point wasn't relevant, just trying to help.