Its really hard to make a complex argument in 140 characters (as it was back in 2013), even if he wanted to. The short format really invites these "just a few word" opinion pieces. I think its easy to see how this, given the right ingredients, can trigger a misunderstanding or at least an incomplete understanding.
Text lacks a lot of context humans usually communicate via voice and facial expressions. Lowering the information even more by restricting the amount of text can make it hard to convey the intent.
I am not saying "his tweet was fine, just misunderstood" here btw. I do not know his indent when writing this tweet. And I think its on the author to make sure their message can reasonably be understood as intended.
But I also see how something like this can happen without malintent on the authors side.