To non-comply with an ATC command because of SOP is a disgrace!
What kind of nonsense statement is this? Who's in command, the captain or the ATCO? Is the ATCO type-rated and command checked? Does he have some kind of greater appreciation of what's required to put the aeroplane safely on terra firma than the crew do?
Remember the S in ATS, it stands of Service. ATS/ATC is a service that stops you hitting the other tins in the sky. The pilots control the aircraft, ATC control you not hitting other aircraft. If the captain wants to fly at 180kts into AGP (which seems reasonable to me given the nature of the place) that's his perogative and shall remain so long as ATCOs are not the legally responsible commander of the aircraft.
ATC wont ask you to fly anything dangerous
Had you ever been to AGP and witnessed the shambles that passes for ATC there, you'd retract this statement!