No. The crashing is because things were changed to just use symbols to make things easier, and it wouldn’t really make sense to undo that in v20.It seems using code terms like "Interpreter::PBTrainers" and "Interpreter::PBItems" and coding battler NPCs like this:
pbTrainerBattle(PBTrainers::LEADER_Brock,"BROCK",_I("Insert quote here."))
Causes the game to crash in Pokemon Essentials V19.1 when trying to run these scripts. Does this work in the current Pokemon Essentials V20.1?