The visual on this page is not a good representation of the node's appearance in game at the moment.
The node in game has a string in the center that can be edited like a text field. This text field actually just renames the slot of the protoflux node, and will populate with the node's name when unpacked. This is useful for naming your variables, and should have no downsides. As such, never assume this node will have their slot name contain this node's type or something similar.