I have to agree with this. The current setup effectively makes doing anything other than +2 to the attack stat each level a trap option and renders hybrid builds like the Wayfarer a downright terrible prospect. If this scaling is absolutely critical to the design then make it 1/level rather than 2/level so that the other point can be spent elsewhere.
I'm fine with diminishing returns or even a hard cap on going over 'par' on the attack stat (the latter seems to exist at character gen) if that's necessary to maintain balance (and encourage player to spend the second point on something else). For that matter I'd be okay with 1/level scaling and splitting the stat points between attack and utility categories just like skills (+1 to Str/Fin/Int and +1 to Con/Memory/Will each level).