Adjunct to scarves and their various utilities in cycling

I have previously mentioned scarves and cycling and someone posted
something about newspapers and their role in the Tour de France

I noticed that in stage 13, there were quite a few cyclists who shoved
newspapers up their jerseys/tops just as they crested the big col.
Indeed, there were quite a few bystanders(?) who were standing by to
hand out wads of newsprint, as well!

I did see a AG2R(?) rider do the same in the stage before(?) so, maybe,
the tradition continues