Anyone else think it was a little weird when skull face pointed directly at the camera and said "Remember the Alamo" and nobody reacted to it? Not sure what Kojima was going with that

Volgin says this in MGS3 before firing the nuke at the research facility. The nuke was named after Davy Crockett, who died at the Alamo. I haven't played MGSV since it launched, so I don't remember if this is before or after the origin of XOF was revealed. Ocelot was present when Volgin launched the nuke. It's likely that ocelot reported the event with Volgin to Zero, who was responsible for the formation of XOF. The burning man is somehow supposed to be Volgin, which is probably my least favorite detail in the MGS series, and he appears immediately after Skullface says it.

That's the best I got. It is weird.