Plot hole: Seeing The Child in episode 2-1 minute 10, Amy Sedaris' character shouts "Thank the Force." Up to that point nobody seemed to have the faintest idea of what sort of mysterious energy Grogu was using. It gets worse in episode 2-3 when Mando uses as greeting for the New Republic "May the Force be with you", which is used later other times. With the concept of Force being this ingrained in people's culture, it's inconceivable that *everyone* is completely clueless about Jedi, especially considering that Order 66 with the Jedi purge happens barely 30 years before the events of the Mandalorian, and several characters such as Kuiil or Greef Karga were alive and active during the time when Jedis were powerful and part of the administration.
Suggested correction: There's a difference between seeing the Force used and knowing what it is and the common phrase "thank the Force" or "may the Force be with you." Plus, the Child is not a Jedi.
Not technically a Jedi, but he has been trained by Jedi and does those magical Force things that people would associate with Jedi, and would be perceived as such, if only people had any memories about them. Mando and Greef do not have the faintest idea of such 'magic' having ever existed, and Kuil has heard 'rumors' of it. Less than 30 years. Really, it's a common problem for all the Star Wars saga to some extent and it has been already debated to death. In this series nobody even seems to know the concept of Force in season 1, then in season 2 it pops up with random mentions.
The sayings are just customary more than knowledge of the Force. The Galaxy is big, with 3B habitable worlds, each having up to hundreds of millions if not billions of inhabitants each. The Jedi, at their peak and fall, were around 10,000. Many never heard of the Jedi, even less seen one. Find a remote village somewhere, and ask them if they remember the Atari.
