Yes. Power supply to Firestick is the plug supplied.
I power my Firestick Max from the USB port on the TV, simply plug the Firestick USB cable into the socket, saves running a long cable behind the TV. But don’t try it till you’ve sorted your image quality issues out. There’s defo a big difference in image quality between Sky and the new Firestick.
Make sure your TV has at least the same rated output as the Firestick needs 5v 1000mA (1 Amp) or could burn out your TV’s USB board.
Tere are speciality USB to Micro USB cables that enhances power transmission fro a TV such as the Fire cable plus or generic.