I don't remember when song length was released but the statement didn't have any obvious relation to that if I remember. For me it related to length, structure, sound, quality and all that at the time.
I do remember them releasing the length and sort of codenames. The Pumpkin King being TCOT. Hype for Pumpkin King was intense 😁
TBH I think the album has everything to be sort of close to what he said. It's just that the album is so inconsistent in quality.
Like 8V is a 10/10 from start to 24 minutes later. There's ofc discussions about disjointed structure and sure, maybe it's a 9/10 at some points. ACOS is a 10/10 but def has some 9/10 sections for me. That's still great and doesn't change how much I love it
Then take TCOT. The intro and everything from the slow section until the end is clearly 10/10 for me. But the main riff & chorus section is more like 7 or 8/10. Lyrics is a bit silly and quality just doesn't match the rest. Still great song.
Night to Remember. Starts great but later on there's a couple of 6/10 parts that just drags down the song overall.
That's my biggest disappointment with BC&SL. If the quality was consistent and they gave it some extra polish I really think it would be up there with the best.