At the very least, they did a poor job of communicating this in the public sphere. The sound bites many Americans got was to not wear masks, which is quite different than "wearing masks is not a suitable substitute for social distancing". For better or worse, most Americans probably aren't going to search out CDC publications as their primary source for detailed information.
He has indicated PPE was part of the rationale:
"I don't regret anything I said then because in the context of the time in which I said it, it was correct. We were told in our task force meetings that we have a serious problem with the lack of PPEs,"
To be fair, he's been in a very difficult situation and I can only imagine the number of verbal miscues I would have made if placed in a similar scenario.