Yes, one of the dumbest arguments. Your argument about accidental hits to hydraulic lines was much better. LEOs typically carry openly so need to worry about retention more than someone who is carrying concealed. You may certainly ask -- I'm a consulting engineer. Specifically, a systems engineer so I look at processes and data flow as well as specific system designs. Prior to that, I was USAF so the rare times I was issued a weapon, we carried openly and DID worry about retention (especially when supporting the SPs on patrol after 9/11).
Just what motivated terrorist or psycho can you think of who is going to go reaching into random armpits or down pants in search of a weapon? THAT's the stupidity I'm talking about when you focus your argument on retention as it applies to concealed carry. I'll grant you retention as a factor in arguing against open carry but it's a ridiculous point when you're talking about concealed carry.