I've seen other engines with thermocouples similarly configured.
What puzzles me is that the parameter is labeled "EGT" - when it's plainly an inter-turbine temperature. CF6 and CFM's are similarly mis-identified in this respect. We don't call a "pump" a "noisemaker", do we?
Similarly called TGT on some engines, just semantics isn't it? EGT used as a familiar acronym to suggest engine temperature.