Hey,
As Monarch crew, this is my understanding of the situation.
Firstly, as regards the demo, the crew do not do it for their own entertainment or enjoyment. Therefore, it is basic courtesy and manners to pay attention for the 2 minutes that it takes.
Secondly, 1D is one of the designated ABP seats (Able Bodied Person) meaning that the person sitting in that seat should be fully aware of the SEP (Safety and Emergency Procedures) so they can assist the crew in an emergency, or actually open the L1 or R1 doors should a) there be a 6 person crew (a very likely possibility) or b) a crew member become incapacitated.
I have to say tho, on the newspaper front, I felt that it was a stupid thing to have to put away the newspaper for TO and landing. A bag on the floor? Yes as it could obstruct another person getting out of the row, but if 1DEF have to put their newspaper away, then so should the whole A/C.
Most of the time, you merely do it do make sure you are 'following the rules'