It ain't that hard - if a glitch occurs (whether it be intentionally or unintentionally) that saves time, then the run shouldn't be considered glitchless. The door trick as mentioned in the article may not be an intended game mechanic but it doesn't save time from the run either.

The solution was found by figuring out how to execute arbitrary code in the Fallout 3 engine, allowing runners to patch the game as they played

Truth is, the run was rigged from the start

only using mods , the greatest patchers are the modders

You can't have a glitchless REGULAR run of F:NV! How the Hell are you gonna push the envelope and not expect glitches?

The odds of pulling off a glitchless New Vegas run are much worse than doing a perfect Wind Waker run with barrier skip and zombie levitation.

Glitchless Fallout New Vegas IS possible but relies so heavily on RNG that no one runs it

I honestly don’t know what percentage of this article is satire

*Fallout 76