Agreed. DD is 12 and knows that I firmly believe she is the best person in the world. She rolls her eyes, says, "all mums think that" and goes on with her day. It's completely healthy. She's aware that no one else in the world is required to believe it (her dad and granddad do).
I know a few children who know they aren't important tot their parents. They are not healthy or happy.
And the main reason I didn't use the word 'no' very much to DD as a small child isn't gentle parenting. It's that hearing toddlers scream "NO" all day because that's all they hear is wearing. She heard plenty of 'not now' 'not that' 'hands to yourself' and similar. Just not the interminable NO.
And gentle parenting isn't no consequences. An example is spilling things. DD would mess around with a drink and spill. I would have been shouted at while my mum cleared up. "I told you so". Instead DD would look shocked and apologise. I'd say, "what do you think you could do to fix it?" And she would clean up. No shouting, natural consequences, lesson about not arsing around. Another mum came to my house once and DD spilled. The other mum looked annoyed and started to say something and I said, "please wait". DD went and got supplies and cleaned without being asked. I said thanks. No need for shouting or humiliating, or work for me. DD gets to be effective, fix her own mistakes, not be forced to apologise just fix things. She can apologise though when required. She just knows that making good is the actual behaviour, not the apology.
You need to be consistent, calm, expect good behaviour but understand when they are tired, hungry, just a small child.