Every mod that changes gameplay or items changes the balance as well. Even some QoL mods do change the balance. The question is what kind of balance change is toperated by a player.
And here lies the chasm.
The argument was that Spellstrike is all that matters on SwordSaint which not only completely misses the point of the class, it misses the point of the game (massive multidimensionality/nonlinearity).
That sort of thing is usually the result of a mod breaking said game so severely as to trivialize it or essential aspects of it.
If there were a real trade-off for weapon crafting, then weapon enchanting would in fact matter for Magi/Pals/Inquisitors, as it in fact does unmodded.