What about Enma? Because Oden failed to kill Kaido with it, that means Zoro will succeed? Oden had two swords, and failed with both of them. Oh, but wait, the Ame no Hibikari is meant to kill Orochi, because reasons, while Enma is meant to kill Kaido. Whose going to kill Orochi then? Ah, that's right, Hiyori, with Momonosukes sword.
So Zoro kills Kaido with Hiyoris sword, and Hiyori kills Orochi with Momos sword.
But what about Zoro stating he's going to get revenge for Yasuie because of what Orochi did to him? Ah, that's right, Kaido is the real threat, so Zoro killing Kaido means he got revenge for Yasuie from being killed by Orochi.
This is your guy's "foreshadowing". Just a convoluted cluster, that twists and bends to suit your narrative.
So excuse me for not addressing point about people not buying into what you guys consider foreshadowing.