I hardly watched anything of the game because I thought it was 'classic' Castlevania. Thanks :).
Last year's Bloodstained: Curse of the Moon was a throwback to classic Castlevania, so maybe you weren't aware that there are two games or that the two games are very different in their approach.
There's even some 8-bit stuff in this one for fans of those games.
Though I still don't know in what capacity. I assume it's optional since I haven't encountered it yet.