A lot of valid opinions have been given already and I would like to give mine too.
I think that the fix should be banned, and if not that the fix runs should be hidden by default.
I don't wanna repeat what others have already said like Kaya or MLSTRM, since I completely agree with their points.
I just wanna point out the last discoveries in the discord. Through the same fight (Orphan 2 Doom timer), six people have posted their times of the doom timer with and without the fix. For everyone without the fix they have the same time, but without the fix for some it's several seconds faster and for some several seconds slower, independently of CPU brand.
There were always inconsistencies on how the game runs because of the "PC lottery", but if six runners with six different PCs get the same time without fix and different times with the fix I'd say that the problem here lies within the mod, thus should be banned.