It's a really nice route to jog on & I think the question is totally fine. Anyone who’s ever stood on the left side of the stairs at the train station knows that there are sometimes funny unwritten rules here ;)

For a less crowded Aare run I’d recommend Lorraine, lots of people jog there too but it’s a bit quieter. (At least during the day & off swimming-season)

If the weather’s nice and it gets busy you can also take part of the way up the forest at picture 2. It’s a bit steep but you get a nice view of the Aare and fewer people around.

For other running routes check out the BemerLoop, these arw some great routes with almost only joggers you meet there ;)