Display port connector, but only PCIe signaling, no other protocols implemented.
Except for Displayport. Seeing, as you know, half of HN has MBPs they plug into DP'd desktop monitors, including me.
No, the ports on the Macbook are PCIe + Displayport. The Apple displays are PCIe only. The parent was specifically talking about Thunderbolt. You aren't using anything Thunderbolt when you plug into a DP monitor.
Totally incorrect. Before USB-C, there was Thunderbolt 1&2, which was over a Mini-DisplayPort connector.