There is nothing wrong in questioning if Atkins could have done a better job during the offseason in improving the teams defense without sacrificing that much offense. Yes most of the blame lays on the players, but Atkins put this team together at the end of the day. He owns some of it.
As for the deadline, there were definitely bats available. Don't make it seem like there weren't any. As well, the Jays could have addressed the issue earlier before the deadline if they wanted to, but meh.