it's not that he's spamming exactly, it's that he's just overpowering his opponents instead of thinking like he used to do before vs deidara and itachi for example. in the danzo battle for example, he would have won more comprehensively if he used his mind better. instead he won just barely, because he got karin to heal his stab wound while danzo's shodaime cells went crazy.
naruto does spam also, as does itachi with his genjutsu, minato with his ftg, and so on. however, these guys THINK, they use their jutsu strategically. look at naruto vs pain, he tricked a rinnegan user with linked vision with his tactics 4-5 times.