Did you lay all those tracks manually, or did you just use copy & paste (or array) to duplicate tracks?
In KiCad a (copy of an) existing track just gets assigned to a new net if it gets attached to another pad. I experimented a bit with this (and more) in:
What I have noticed is that it is always better to manually route rather than opting for autorouter. Autorouter will just connect the traces from one point to another. These can result in awkward shapes in the board layout. If we do the routing manually we can create the shapes as we want and make the layout look symmetrical. We can also modify the traces. This helps to prioritize our traces as well.