Well you're making sense, but that would mean a whole game re-design..
The wall glitch was for a specific level(s), as is every other intentional glitch, so there's no need to be disappointed as if every level had that glitch then some levels would be broken, like imagine falling out of the world via wall cliping.
yo in his video he literally put his inspiration
https://www.youtube.com/watch?v=gAXVzzZsmE4&t=15s
YEET YEET YEET YEET YEET