Stable approach criteria I reckon.
I get the impression Easyjet are more likely to get upset about this sort of thing than most others. "Children of the Magenta Line"? Too much ongoing line training? Airline culture? Threat of censure for busting stable approach criteria?
The industry is moving rapidly away from pilots that can fly to pilots as systems managers and Easy seem to be further down the road with this than many others.
I don't see why they needed to make an issue about it on the R/T though.