I didn't write the curriculum, so this is a stab in the dark... This Unit has been through multiple pilots and at one point there were quite a few lessons focusing on this topic - I believe it was an attempt to but in some Digital Citizenship and possibly give a preview to the content on the CSP. The great thing about the curriculum is you can do what you just suggested and take out lessons and place them in an order that makes sense for your students.
For me I used this as a "speed bump" which students that were cruising through the curriculum could stop and wait to discuss as a class.
Would love to hear how next year goes with the next order!