The Route 80 contains all VirtualService's hosts

Hi, guys , when I execute

istioctl pc route details-v1-7b75744fcd-fl9t2.9--16523049  --name 80`

NOTE: This output only contains routes loaded via RDS.
80       30

I notice that there is a lot of Virtual HOSTS, then I found it contains All the hosts that defined in VirtualService.

Is that feature or bug ? It looks a little strange.