I have 3,638 inspections done on my Smog DADdy's original 15 ft. OBD cord, and it looks almost new, except for a few scuff marks where my service writer shut the driver's door on it. It has much longer strain reliefs at each end than the Drew pictured above.
“Never attribute to malice that which can be adequately explained by stupidity.”
Complaining about everything is a requirement of the Smog Check Rules and Regulations for technicians. Just like keeping your mouth shut and letting stupid shit become regulations is part of BAR employee guidelines.
None,you're right one is a DB-15 and the other is DB-9, I think I ordered both cables and the gender changers from cables.com,although I've to say I'm not sure.
Generally I don't use Bluetooth and my OIS usually is stationary,But I could imagine some stations everyday plugging in&out would cause a lot of stress on the solder joints and ultimately cause communication failure.