Injury kept him out of the team for some time. Not sure he can be judged by the Fulham and Spurs matches; other players aren't penalised so harshly for their mistakes.
No he's not better than Mings, Konsa and Hause. But that's a high bar. Is he no better than whoever his placement is? I like Konsa but he owes a lot to Mings providing support. Hause has talents but also weaknesses and I'm not sure he's better than Engels. I reckon Engels is our best attacking player at corners, at which the other three haven't achieved much.
I just have a feeling there's a story out there. Certainly DS has well and truly ditched him; why? Managers do this, but there's usually a story behind it. I can think of several possibilities (with nothing to back up any of them).