due to the new rising corona infection numbers, the dfb decided at the beginning of the week to continue the second half of the season at the beginning of january without spectators and thus with ghost matches in the bundesliga 
It wasn't the dfb that decided that. It was decided by the government: "major events takes place without spectators". And soccer games are major events.
But I found it not uninteresting to hear what the coaches and players say during a match at the TV broadcasts. You don't get to hear that otherwise.