Well, "Tork insurance" wasn't me, but I did say I thought this puts Tork on notice, and that maybe a trade to a more less forward-thinking organization might be good for him. But I am taking the scouting at face value has below-average catcher tools but has shown good glove and soft hands at first.
To your point, if his hitting is already a finished product, then yeah, he doesn't rank highly at first. But if what I suspect is true—if Harris sees an opportunity to substantially improve his too—then he might end up being a plus all-around first baseman after all.