Of course they do. Did you think you were a girl when you were little or a boy ?
Thinking that kid don't know who they are is stripping them completely of their agentivity. When a kid is traversing gender disphoria, we are not talking about a simple confusion on wether the kid think they are a boy or a girl, we are talking about a REAL SUFFERING with REAL COMORBIDITIES that can lead toward suicide or suicidal attempts.
This is not a game of who's who here.
Thinking that kid don't know who they are is stripping them completely of their agentivity. When a kid is traversing gender disphoria, we are not talking about a simple confusion on wether the kid think they are a boy or a girl, we are talking about a REAL SUFFERING with REAL COMORBIDITIES that can lead toward suicide or suicidal attempts.
This is not a game of who's who here.