I wan't to get into portal 2 running and i've done a couple fast runs glitchless so why isn't there a glitchless run that i can find?

https://www.speedrun.com/portal_2_category_extensions#No_Major_Glitches

ok thanks i couldn't find that

the tl;dr is that its so hard to define a glitch in this game and frankly removing most of the glitches just make the run less fun