Yes. Thematically this difference is as great as that between wizards and clerics. The thematic confusion is sorcerer vs wizard and cleric vs warlock. Arguably also nature cleric vs druid.I know the Sorcerer can be Draconic, with the "lineage" from an individual Dragon. But even here, I view this as "planar". With the lore of the "First World", both Dragons and Giants are fundamental aspects of the Material Plane. So I view Draconic and potentially Giant as planar affinity with the Material Plane.
Likewise, the Aberrant Sorcerer has no relationship with any specific Aberrant creature. The affinity is with the plane of Farrealm itself, its ambient energies.
By contrast, the Warlock "pact" is with a specific creature.
Mechanically, of course, the Warlock is the one furthest from anyone else. And as I've said thematically the wizard is a sorcerer subclass - and the wizard subclasses are all very meh and none of them really inspire people that I've seen. Even bladesinger.