Sure is funny how that "malarkey" got discussed so much, with research, and clarification for us all. I would think that Optimas are not the olny top and side post battery that might have problems. I use the side posts on my Z71 with a winch but the battery is designed as a side post olny battery. On my 40 with winch I use olny the top posts. To each his own but why take the risk?
Most winch connections that I've seen don't have the typical automotive style top post terminal to hook up with. They're just a heavy duty ring terminal meant to be hooked up to something other than the top posts of a battery. A modification of some sort is in order to securely connect to the top post and this is not provided by the winch manufacturer, usually.
A person should be able to reasonably conclude that posts on a battery, especially a battery touted for off roading, would be capable of handling anything that battery is capable of powering, unless marked with a warning of some type on the battery itself. Such is not the case with Optima side posts. And while you were correct about the Optima, you were wrong about the Die Hard Platinum. Remember:
From your post #2. A reputable battery should allow you to use the side posts for anything the top posts can handle. Hell, even my el cheapo Costco Kirkland does it better than an Optima!:Only use the top posts for anything with a heavy current draw. The side posts are not made to handle anything but light current. Do a search on mud to confirm that this issue has already been discussed at length. I found out myself on Mud and had to reconnect my Optima battery using the top posts. I don't use my side posts anymore.