I remember reading somewhere if you have interrupted sleep, you're more likely to remember your dreams. I do remember having lucid dreams a few times or willfully waking myself up when I have creepy nightmares because I usually know when it isn't real. Also you will forget most of your dreams in say 10-20 minutes so that's why people write them down.
As for being "spiritually weak" or let's say sensitive, I'm pretty prone to getting obsessed with things, kind of mesmerized by JayK tbh. I think I'm older now so I'm more self-aware and I quickly get bored of things. Like at least this time round, I'm not spending days thinking about them or looking them up so I think I'm mentally ok. This wasn't the case for me in high school with another kpop group and our minds lot more malleable when we're younger.
I think it's a matter of recognising how you are and figuring out what's best for you. I don't think it's healthy for me to completely avoid it because my curiosity would make me think about it more. I know I can restrain myself and recognize if there's something wrong. To each their own.