I didn't get that either. I think he was trying to say that when Walt Disney and his top Imagineers designed and built Pirates for Disneyland in 1965-66, they actually had in mind the Cliff's Notes version built for Disney World in a panic in 1973. But for some reason they didn't build that one, and instead Walt poured his heart and soul in the last months of his life into the longer, larger and more dramatic version that Disneyland got in early 1967. I think that's what he was trying to say, but not sure how he got there.
Now, if you want to talk about the fact that the entire first Pirates show building was originally dug into the Anaheim bedrock in 1962 to be a wax museum walk-through in the basement of a much smaller New Orleans expansion of Frontierland for 1964, except Imagineering got overwhelmed by early '63 with work for the World's Fair so they put the whole thing on hold,
then that's another story.
Disneyland From The Air - Autumn, 1962
Top Center of Photograph - Basement Excavation for Pirates Wax Museum Walk-Through
But by the time they returned to the Pirates project in late '65 with all the knowledge and technology gained from the World's Fair the idea of a wax museum walk-through seemed woefully inadequate. But that basement they dug out back in '62 was still sitting there, and Walt really wanted to do something with pirates. So instead they morphed the
wildly efficient Small World boat ride system with the
wildly impressive human animatronics from the Carousel of Progress, and then ladled a lavishly themed land literally on top of this new E Ticket, and the Disneyland audiences were absolutely floored from the first day of operation.
If you want to talk about that pirates chapter in Disneyland history from 1962 to 1967, that would be fine. But if you want to suggest that in 1965-66 that Walt Disney and his top Imagineers actually dreamed of the 8 minute long Cliff's Notes version of Pirates built in a rush and a panic by Card Walker for Magic Kingdom Park in 1973 but Walt had to settle for the 15 minute long Disneyland version he ended up with in '67, then someone else will need to buy the first pitcher of beer because it's going to be a long talk.
And yes, that's the Haunted Mansion under construction on the right of the photo; another attraction planned in '62 to be a walk-through but would be put on hold by the World's Fair and then turn into a lavish E Ticket ride-through using World's Fair ride systems and technology but delayed until 1969. But that's a whole other story.