feel that the bad part of SotN has also been resurrected

A valid concern, but I don't know if it's universally true, or at least, it doesn't have to be. The GBA's Circle of the Moon has a similar combat approach (albeit slightly slower), and it still requires a good deal of strategy (and/or combining of different attack assets like sub-weapons and DSS) to survive in the castle and defeat bosses, especially those like the Zombie Dragons, Adramalech, and Dracula's Second Form. Granted, some of these you can cheat more than others depending on your loadout, but you still generally have to watch your placement and dodge. And the first time you approach these bosses, you won't have the benefit of knowing their patterns. Either way, you can't just wail on them very easily and expect to win. The examples below are no-damage, so the person has had experience, yet they still have to manuever around. So, for Bloodstained, it's going to depend on the bosses' design, weak points, and attack patterns. The relationship between attacking and jumping has always been something essential in Classicvanias, and while SotN lowered the challenge, I don't think there's anything wrong with this ability to wiggle-maneuver in the air while attacking, so long as it can't be overly exploited. I like the idea of having the combat and traversal seamless in that fashion, rather than having two dedicated gameplay systems.

Perhaps I'm overgeneralizing, but hopefully I'm making some sense.