Alex Kurtzman, the showrunner for the Star Trek franchise, revealed that the trend of shorter seasons in television has led to what he calls “filler episodes.” These one-off episodes often don’t contribute much to the overall season arc and are used to fill the season quota. Kurtzman believes that shorter seasons allow for tighter storytelling and less room for filler episodes. He views this as a positive shift in television production that leads to more focused storytelling.
Source: gizmodo.com