No, I think it is the right move. I don't play online, just live games, and my main partner and I discuss this at length. Sometimes the all-in move (or overbet) is exactly what is needed to get the call. A potsize (or close to potsize) bet may push the player out, since the risk is high but the reward not so much. But, with all those chips on the table, an undisciplined player may take a stab, since they are there to gamble.