Marandahir
Crown-Forester (he/him)
How would that make sense when describing the class? Their hale and hearty physique is tested when channeling corrupting magic? Lesser beings who enter into these pacts are swiftly killed as soon as they magically start a fire? Mechanically, it doesn't matter. But descriptively it matters a lot.
Are you confusing Warlocks with Sorcerers? They were talking about Con-casting Sorcerers and leaving Warlocks as Cha-casters, to deal with the overabundance of Cha-casters a different way.
Your description above is what people complained about with the Con-casting Warlocks in 4e (you were either Cha/Int, Con/Int, or rarely, Con/Cha).
Sorcerers casting from Con is likely an idea to them getting their powers from their blood. Of course, this isn't always the case, and there's plenty of situations where it isn't so, so I'd prefer them to stay Cha-casters, myself.