No, it means there off the list. They got their SB GP slot. They can’t get a second one. They need to be in the top 24 of the WR list. So that means they only get one.
The “they” in my post refers to GP host who select replacements.
I'm pretty sure that's not right. Let's take Brendan Kerry for example. He got Skate Canada initially from his SB (which was not top 24). Then, he got Rostelecom as a 2nd one. He couldn't have been a host pick for either, so having an SB below the threshold that guarantees a skater one GP slot does not preclude them from getting a 2nd one.