That's crazy talk. Our group (3 DSLRs, 1 heavily-rigged P&S) spent 5 days diving the Liberty from shore. Considering the wreck is LITERALLY rock-throwing distance from the shore's edge, and there are raised platforms for camera gear, there's no reason why a boat is better than shore unless you're actually handicapped.
LOL I know I'm getting older but handicapped is a little strong no? It's doable from the beach, of course. But from a boat, I can drop in on whichever part of the wreck I want to work on, or run through the entire wreck, finish up with the jacks or in the coral garden, pop up and there's no long swim or walk back to the entry point where the tables or particular resorts are.
Then there are conditions. If there's current, you don't have to swim back to shore and walk back to your entry point where your table, instead of doing whatever you want on the wreck and finishing up on the top to be picked up once done. There are also times when the waves get big due to winds etc, then you have to deal with chop as well on a pebbly rock walk with full rig on you and in your hands.
The other sites (like the drop off), when done by boat, there's no need to swim against the current, because you can be dropped off ahead of the current of the site and enjoy the dive going with it. Opposed to just kicking into the current, burning through your tank and circling back. If the current is good enough, I can even finish the dive on the wreck where the cleaning stations are or with the jacks, all the way from the drop off.
I'm not adversed to shore diving and admittedly it is eco-unfriendly, but it's that much simpler with a boat in for the Liberty and the surrounding sites.