And I blame Cons mostly since he's the (only) one saying it ('Fest never said he ghostwrote for Kanye to my knowledge)

I don't doubt that, in their writing sessions together, a lot of stuff was bounced around and Kanye was like "yeah I'ma use that line thanks fam"

Wu does it, hell a ton of crews do it I'm sure

I don't think Cons -- the same guy who claimed "co-writing" credit for reciting Slick Rick lyrics in Beyonce's "Party" -- or 'Fest wrote entire songs for this dude