Written script for NPC's and sudden use of contractions

[Hasrat]

Urianger can't even use proper olde faux english with any sort of consistency.

Considering literally nobody else we've ever met across the length and breadth of the world(s) we've traversed speaks in any way remotely similar to Urianger, I can only conclude that he's genuinely doing it intentionally just to be difficult.

One of these days the act is going to slip and we'll finally learn his speech is actually more country yokel, and he just really wanted to sound smart.