Against the German schismatics and against some others. It’s advisable to listen to it.
In my opinion, it is very well reasoned. Letting everything continue to rot doesn’t solve anything. I also absolutely agree with him that the Pope has to definitively close this mess. That’s what the Pope is for. And only he can do that.
https://www.religionenlibertad.com/multimedia/260509/alemania-desafia-papa-roma-responde_118074.html