Given the situation and how is family is packed behind him and how he's side strafing and not actually engaging no I wouldn't drop him for being a threat he's just protecting his own and it's obvious he's protecting his own. Had he been engaging or moving in a different manner with the amount of people he's with. Absolutely
Now, if I wanted his gear bad enough that's a different story but that's coming from the only " wolf " on this board.
An observant "good guy" with an average or above IQ would likely react like you said. But all "good guys" aren't the same.
Figure in the less observant, below average IQ, OR maybe off-duty-at-home police &/or mall ninja types (all threat mole hills must be made into mountains - you know there's no shortage of these fuckers...they're in the news every day.)
Do you really want to take the chance that the "good guy" observing you is as rational as you? Personally, I'd rather attract less attention.
I know that little maneuver looks awesome and makes for a great video, but is looking cool worth the risk?
What you* were used to in the military, IS NOT the reality in this scenario:
You have no team.
You have no reinforcement team.
You have no medivac.
You have no eye in the sky drone intel.
You have no artillery support.
You have no air support.
You have no supply drops.
You have no (fill in the blank.)
*Plural "you". Not meant to be personal.