While what you say is true, Boruto does deserve praise. He may not be a prodigy like Itachi or Minato, but he has got impressive things going on. Managing to control a Rikudou Chou Odama Rasengan, learn KB, Rasengan and Shurikenjutsu are good feats. Sarada is underrated here because of CES without any apparent reason, but in reality she's a ridicolously overpowered character due to the Sharingan. Things Sakura and Tsunade lacked were top notch speed and reflexes, something Sarada is innately good at.