I hear you and disagree with some points based off the criteria I wrote about:

Classic albums. Wayne's "The Dedication" mixtapes still get regular rotation. If you put one one, Black folk will start rapping. I also feel "Tha Carter III" is a classic, with both singles and deep cuts peole love to this day.

Beefs. This is the strongest case against Weezy being considered for GOAT status. He has had no memorable rap beefs that resulted in classic diss tracks or freestyles like Common's "The Bitch in Yoo," Nas' "Ether," Boogie Down Production's "The Bridge is Over," or Drake's "Back to Back."

Lyricism. I actually wanna revisit my premise and say that Wayne, more than any rapper of his generation, is the successor of Eminem's highly technical style of spitting. Wayne, at his best, layers intricate wordplay with insane rhyme schemes (Check out "Dedicate" from Tha Carter V for a recent example). He adds his own spark with his vocal intonations to make his flow unique. Kendrick Lamar is the clear successor of Wayne's style as he is a mix of Nas and Weezy.

Legacy. Many, many rappers have drawn influence from Wayne's style. Kendrick Lamar, who mixes Wayne's inflections and rhyme patterns with Nas' knack for storytelling, is the clear successor.