Why do you think SWAT prefers to kick down doors of the "Mr Harris"-types, rather than approaching real crack houses of real hardcore check gangs? Could it be that they do not want to face actual return fire or booby traps?
It would be pretty easy for the drug gangs to "send a message" to the SWAT unit, by having an informant tip them off to a drug house which is booby-trapped up the wazoo, and which goes off when the door is kicked in. They wouldn't even need C4 -- a few barrels of gasoline and some gunpowder would do.
“It would be pretty easy for ...”
With that kind of speculation you can justify the maximum amount of force for the most trivial of infractions.
So, you’d be ok w/cops surrounding your vehichle, getting you out of the car, onto the ground, strip searched, and cuffed before they tell you they pulled you over for not wearing your seatbelt?