If ice is the trigger for a fault in the function of static ports, what sort of evidence does that leave behind?
I can't recall any event where static icing was implicated and would be surprised to see icing problems at the static location if that be on the aircraft keel surface. As to evidence, like most icing, the evidence of a single event melts with the ice ...
The 737 proved that it wasn't as longitudinally stable as the 727 (unlike the 727 you couldn't rescue a fast approach by throwing the gear out early)
Saved more than a few hot/high approaches (don't we all love ATC track shortening ?) by reconfiguring early - if necessary back to final approach configuration well out to improve the descent angle to something better than a mile a thousand. Or have I missed your point here ?