Defintely not glitchless, but still legitimate (in a way).
The rules on the speedrun.com page for Noita mention the exploit, but for any% you need to count any runs to acquire the wand as well, making it pretty pointless. I also don't think that you need a mod for the wand, just that doing it normally takes too long.
Apparently they are creating a category specifically for this exploit, so that it doesn't matter how you got the wand, and the 2s run would count.