No, you are not weak, op.
Think of it like this: PTSD occurs when your mind and body work overtime to protect you from danger - basically, they've become too good at it.
Insensitive idiots who think and the TELL you should be over it, really don't have a clue. They speak from a shocking (and enviable) level of ignorance. Either they've never experienced abuse so have no concept of its impact, or they have and are so deep in denial that they're projecting their own fears onto you.
You know what? It's your life, not theirs. Your experience, not theirs. Trauma does take years to recover from, and recovery isn't linear either.
I don't like to assume, but id guess that after years of psychological abuse you are learning not to minimise what you went through, because minimisation was part of the abuse?
If so this will make you vulnerable to others who minimise your experiences, although they may do so from a benign place.
You are moving on with your life, but it's not like changing jobs! The process becomes part of your life.
If they don't understand this then they are in for a tough time when life deals them a curve ball and I hope they don't ever know real tragedy.
Are being formally diagnosed with ptsd now? Regardless if yes or no, you might well look back on this time and realise it was a turning point because it will hopefully bring you clearer nsight into who you are and why you feel the way you do.
And once you've got that, you can choose how to grow.