Is the lone Final Froggit encounter really unused?

I saw a line in gml_Object_obj_lazyencounterer_core_Collision_1576, which says
if (global.flag[419 ] == 1 && battleno == 68)
battleno = 61;

flag[419] checks for if the warrior's path's complete (line 450?) and saves it to file9, battleno 68 is Knight Knight + Madjick, and battleno 61 is the solo Final Froggit, so I've been looking for ways to encounter it, like dying after pressing the switch, or editing my savefile, to no success, but I don't know how to check if the object is even used or if the entire code goes unused, can anyone confirm if this is impossible?