It looks like this behavior has changed, and now the traffic by the repository owner's views does not count when the owner is logged in.
A recent support question asked this, among others, and received the following reply from a member of staff:
- My visit to my repository also count as a visit?
No, viewing your own repository while signed in doesn’t count towards this data.
I have checked that his holds by checking one of my repositories: the graph shows no views even on days when I visited the repository several times.