You don't even need that. An EK (int caster) can dump INT to 8 and still be perfectly functional using Alarm, Magic Missile, Shield, Absorb Elements, Floating Disk, Unseen Servant, Mirror Image, Darkness, Magic Weapon, Haste, Sending, etc
Well, You need int to MC into or out of Arcane Trickster and EK, IIRC.
All gaming systems should be terribly flawed and exploitable if you want everyone to be happy with them. This allows for a wide variety of power levels for games for different levels of players.