What makes a poet a poet? There is of course no simple answer. You could argue that self-declaration is enough. You could also argue there must be a measure.
Bang out hundreds of pages of rhyming couplets about something other than your identity or your perceptions, and you, too, will likely fall out of love with lyric poetry.
When we have a child or teen at the center of a story, is the categorical difference between YA and adult in the plot, the stakes, or the voice and tone?