I think Wickard vs Filburn is one of the worst decided cases out there. If I live in California and visit a website hosted in California there is no reason why there should be any interstate commerce involved.
That is possible, but not guaranteed. I don't think the federal government has any authority to regulate the traffic that remains in one state only the traffic that goes through another state. I would also mention that not all traffic would be commerce as well. Going to HN isn't commerce so I don't think the federal government would have any authority even if the traffic crosses state boundaries unless it is genuinely commerce.