Agreed, routers don't have enough storage to retain enough useful information dating back to the elections. If the routers retained the full security logs and configuration changes dating back, they could show configuration changes to open ACLs to IP ranges that may include source IPs in other countries. That doesn't really mean much as a hacker could run everything in VMs hosted in AWS and source IPs from US-West.
Agreed, routers don't have enough storage to retain enough useful information dating back to the elections. If the routers retained the full security logs and configuration changes dating back, they could show configuration changes to open ACLs to IP ranges that may include source IPs in other countries. That doesn't really mean much as a hacker could run everything in VMs hosted in AWS and source IPs from US-West.