You posted the "Personal Use" section of their terms, and intentionally cut out what comes before and after it.
For anyone curious to read the full terms, they're here: https://boredapeyachtclub.com/#/terms
For anyone curious to read the full terms, they're here: https://boredapeyachtclub.com/#/terms
Full copyright transfer and licensing are not the same thing. The BAYC terms seem to be a sale of an instance of the Art, with a limited nonexclusive license to the intellectual property. An exclusive license is considered a transfer, but this isn't one. If you got an exclusive license, nobody else, including BAYC or OpenSea, could display the Art without your permission until the copyright runs out. BAYC didn't give up that much.
It's not clear that BAYC images are copyrightable in the US, because they are procedurally generated from templates. That will probably be litigated at some point.
There's an interesting trade dress question. Suppose you fed a supply of BAYC images into a machine learning system and had it crank out similar images. Does Yuga Labs have any claim against you?
[1] https://www.intellectualpropertylawfirms.com/resources/intel...