Missed approach instructions
There are criteria in ICAO 4444 which define when an aircraft should be instructed to go around, vs when it should be advised to go around. If the ATCO considers the aircraft is dangerously positioned, then it's an instruction; if he/she considers it to be in a position where a safe approach cannot be completed, then it's advice. Both of those hinge on understanding what the ATCOs involved were able to see, what they could deduce from that information, & of particular note, how much that differed from how they were used to seeing the aircraft fly it's approach. Without understanding how PIA normally fly, & how different this approach was, it's difficult to draw any conclusion as to whether the ATC reaction was appropriate or not.