Is absence of everything enough trauma?

I was talking with my therapist and she brought up the possibility that me not remembering my childhood could be because there was quite literally nothing worth remembering and that's why my memory is so bad. Don't get me wrong I did go through a bit of emotional abuse and neglect and had a horrible drunk father. I watched my father throw my step mother into a wall, my dad was never a dad and would dump me off at family or his friends to be watched while he did whatever he did. But before I started seeing him again it was just me and mom. I didn't have any friends, my siblings wanted nothing to do with me, went to a very small school, was always in my house in my room because it was the only place I felt welcomed and safe. I was grounded a lot as a child (I don't remember why?) and would be banned to be in my room Harry Potter style. I would make original characters, write stories and maladaptive daydreamt to cope with the constant boredom and absence of emotional support from parents /step parents.

There were very few times my mom did hit me but she has smacked me in the face a few times after saying something she didn't like or something that was rude of me to say and has hit me in the back of the legs when i wasn't moving fast enough to get into bed. But those are the only times I can remember at the moment.

I just feel like the amount of trauma I went through was average and not worth this disorder I might have. And if there was basically nothing happening in the periods of time I'm blacked out on, could the absence of comfort and friends/family connection cause this?

Edit: Thank you for the kind words. I will spiral bad over this occasionally. I apologize..I'm doing what I can to stop spiraling and doubting myself even though I know it also comes as part of the disorder