Yup, Boruto and Sarada are basically Naruto and Sasuke. I don't why they couldn't make new moves for them and have them use those. Instead we have Boruto doing rasengun and shadow clones the way Naruto did, and it's just boring. I feel like the series could have done so many interesting things with the next generation and they pick the most vanilla safe story possible.
Eh, it's not so bad. Boruto actually does know a lot of moves. He just likes to spam Naruto's moves too much, Just take a look at the list of moves:
Sarada's the one that needs more moves than lightning, fire and super strength.