Having played Kirby games with Bandanna Waddle Dee in them in a playable capacity, I just don’t really get the hype.
Like, i’ve mellowed our with my dislike of the character...he’s the go to player 4 for Kirby games with that formula. But gameplay wise, I find him boring.
Sure, his moveset makes itself. But he will poke and stab with a spear....swing it around to recover...ok? Just seems a bit boring. Like, on those grounds I can see why Sakurai would look him over despite popularity. Personally I can acknowledge the popularity but still ask, “Why?”
In terms of bias against the Kirby series, I just think it has more to do with already having the 3 most important picks in and perhaps not feeling the need to add more? Zelda has more than Kirby, for example, but they have effectively 2 Zeldas and 3 Links. Another series with great newcomer potential, but only scratching the surface with the main 3, and different iterations of them.
I mean hey, if BWD gets in he gets in. I’m just not all that interested because i’m not convinced he’d be all that compelling of an addition.