The average speed itself says nothing. In 2016 Barum we had a stage with 125 average (R5) which sure isn't even close in danger to famous Pindula where the average was 114. The main reason is that the first one had one junction/hairpin on 14 km.

There are even faster stages in Ypres where average speed is bellow 110 just because there is huge number of square junctions which make the roads looking way slower then they are.

To this case... They made the new cars faster so it's beyond me how can they be surprised that the cars actually go fast...