I agreed then and agree now. Having 'a great arm for his size' is not the same as having a great arm. After watching him for a year, I can't believe that it's even up for discussion.
The downside with Golson is as several of us predicted. He not big enough or fast enough to be a 'running quarterback' and he doesn't have quite a good enough arm (nor size) to be a full time drop back passer. This doesn't mean he isn't a good player, nor fun to watch, nor an asset to the team, nor a great guy. He just isn't the superman that people thought he was from watching his high school highlights.