It turns out he wasn't almost ready and the Sox seemed determined to ignore this information as they kept promoting him despite him struggling. For me, it throws off any obvious timeline for when he might reach his potential because he got to the MLB before he showed he was ready to move on from AA.
This year, his numbers are much different in that he's getting a lot more strikeouts and swings and misses than ever before, but his command is worse as well. I don't have high hopes for his time in the MLB right now but I don't dismiss the possibility that he eventually figures it out and becomes quite useful.