Nothing wrong with a taxiway evacuation, depending on the actual situation and assessment.
There might have been a need for expedited debarkation, but in PUJ, things are sometimes not up to speed, so an organized evacuation via slides once the aircraft has been brought to a halt and secured is indeed maybe not such a bad idea.
Once again: depending on actual situation.
Seems some Brits are always the first to criticize anything Russian.
