While I think Kid's role in the story surely won't be over, I think his run as a PK candidate is getting set up to be over.
I think the spoilers are either fake, or missing important context. But regardless, I've always expected Kid to lose here.
After seeing BB face Law and Shanks face Kid, I've begin thinking Oda was always planning the 4 current Yonkos to be the actual PK candidates.
BB will get ponegyphs from Law, Shanks will get them from Kid.
Giving Law and Kid the ponegylphs was Oda's way to eventually hand them over to Shanks and BB, establishing them as the true contenders for PK along with Luffy.
The 4th Yonko Buggy will somehow meme and bumble his way into the race, and probably even actually become PK lmao.