I haven't played the Souls games nor Bloodborne because I don't have any consoles and didn't bother when they came out on PC, so admitting that what I say lacks the actual play experience, I've watched a number of videos on all of them, and the combat looks really slow. Monsters generally have large tells for their attacks and often have long recovery times which grant openings. The player moves in an arcadey fashion, however, which may make it feel a lot better than the more momentum-based Witcher 3. For that reason, I can see how someone might prefer Souls/BB since it possibly feels better to them.
That said, I really have to disagree with this being "amateur at best". Even though you've put 30 hours in and you're allegedly "not having any problems beating enemies and bosses", it sounds like you're playing in a very boring way which is probably super safe, stay back while you wait for another Quen, and only attacking when it's up. Then I could see why you think the combat sucks.
What I would like to see is a video of you in combat to see how you're playing and how it's apparently so bad to be amateur. Maybe we could help you out in terms of finding a more interesting play style because, even though I haven't gotten that far yet, I've found the combat quite exciting and seemingly much quicker and more dangerous than Souls/BB (again, based merely on impressions from videos) mostly because either there are multiple opponents or they don't have huge wind ups/downs. Here's how I've been playing early in the game:
https://www.youtube.com/watch?v=-IguE_LG3Rc
You need to make your own openings sometimes. You know how eg. drowners work so stop waiting for an opening and make one. Stop using Quen and use Igni/Aard to stagger the whole group which let's you basically kill or heavily maim one of them while momentarily CC'ing the rest which makes the fight easier since there's one less leaping at you.
Also, I'm seeing comments about the somewhat awkward camera. Don't use lock on unless it's 1vs1. If you're not locked on, it's pretty easy to adjust it to point the right way (unless you're indoors or in an enclosed space, in which case, I agree that it can be very frustrating). It also, whether intentionally or not, simulates a blindspot: don't get surrounded and you will never have problems with the camera. Keep all of your enemies in front of you. Positioning is actually important in this game.