As a parent of a 2yo myself I think it's a bit of both. I definitely changed a lot, am more focused on being a parent and also feel lees existential and depressed because I have a new and almost full time project which is raising my daughter to the best of my ability. But I also noticed some changes that I can describe as growth. I no longer have trouble getting up early, and I go to bed early as well if I need to do so the next day. This is basic responsibility that I didn't have before. I also help more around the house and take time to fix things that I would've just left and procrastinated on for months before (changing a bulb, improving my office, etc).
I've got a promotion as well and am doing better at my job, even though I have less time overall. I think this is because I'm more focused than before, which is unexpected since I work from home. I have also become more motivated to work on personal projects. I've started homebrewing since my daughter was in the womb, got back into chess and even did some gardening. So a lot of positive change in my life. I cannot say if this would have happened regardless of my daughter but I am definitely in a much better place than I was before