We're not writing him off, lol. We're expecting him to be exactly what he's pretty much always been projected to be.
Best case scenario; Goins gets the starting job, rides a wave of Ruggiano-level BABIP luck with solid D forming a great season, AA is held at gunpoint to sell high and idek Burns is ready? It's just hard to imagine a scenario in which he's a legitimate starter/anything more than a pretty nice 25th man.