It's unarguable that she has a great instrument. She's also still really young, and taste is something that often comes with maturity.
No question that artists with the most chops aren't always the most musical. The same criticsms could be levelled at Barbra Streisand from time to time. (Another world class instrument that wasn't always "produced" in the most musical fashion). If you can sing or play longer higher louder faster etc. than anyone else, it sometimes actually gets in the way of musical growth because it's too tempting to rely on pure technique to try and blow everyone away. We've all met musicians who can play a million notes in a measure but would have trouble playing anything meaningful or interesting if limited to quarter notes.
Sometimes it's a fine line between virtuoso showing off and brilliant performing. You can find people arguing both sides of that coin about artists like Patti LaBelle, for instance...
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The other aspect to originality is finding your own style, which again sometimes comes only with maturity. Too many young singers out there merely recycling Chaka Khan and Aretha licks.