Sacrosanct
Legend
This completely shortchanges the party spellcasters.
There is nothing wrong with having an encounter where the fighters cannot hurt the foe and basically act like literal meatbags, while the wizard whittles it down using cantrips.
Alternatively, a save or suck spell that allows the party to flee.
Alternatively, a Magic Weapon spell that does allow regular combat to proceed.
etc...
This is true (shortchanging the casters) when spell casters had a very limited resource (spells) and couldn't do ANYTHING without them. Now they have powerful at will cantrips that make that no longer the case. You're basically arguing for some cases where the fighter can't do anything, but no cases where a wizard cannot, (because at wills exist).