Rural households using the satellite Internet providers HughesNet and Wild Blue were unable to access the affected sites. In addition, the firewalls at the state prison and the local National Guard base also blocked access.
One of the issues for our affected students was that they could not register nor add/drop classes.
Just an anecdote to suggest that there may be undesirable consequences to using non-standard ports for a website.
Consider websites on a LAN under you control vs websites on the internet that is not under your control
Using a L2 overlay one create LANs over the internet. Small private networks. Personal use, not public. Recreational use, not commercial. Then one can host daemons, including httpds and websites, on the LAN using whatever ports she wants.