Joel Embiid does not look comfortable taking contact right now. That might not be shocking, considering he's slowly working his way back from multiple serious injuries, but it's still not fun for Sixers to watch their one-time MVP be unable to dominate in the post, which is what has made him so special throughout his career.
Embiid looks trepidatious to really assert himself in the paint, presumably because he doesn't want to injure himself further. The PTSD from so many serious leg and knee injuries has to be floating around his mind nonstop. That's a pretty sad reality.