All these delays seem to be related to Ben Affleck’s commitment as Batman. In addition to the DC Comics movies already mentioned, Affleck will direct, star in, and writer his own Batman movie along with DC Comics CCO Geoff Johns. According to Deadline, the script for The Batman (the rumored title) is already pretty far along, and will be turned into Warner Bros. by the end of the summer.
That’s a huge logical leap, a great chance of false positive a MD would call it. A might be connected to B, but there is no way of knowing, which is why I hate fucking rumors.