Anakin only destroys the Sith on an absolute technicality.
I feel like that’s the entire point. The Jedi misinterpreted the Prophecy.
If what you mean by this is that Anakin’s not supposed to be the Chosen One in a very literal sense, you’re wrong, at least according to George Lucas. He describes Anakin as a very straightforward Chosen One who does defeat the Sith and bring balance to the Force in RotJ, at least until he changed his mind and decided Leia was the Chosen One, except not because he never ended up making that ST.
Anyway, Chosen Ones and prophecies are dumb and Anakin isn’t the OT’s protagonist, but that’s just my two cents.
What could’ve been pretty interesting, IMO, is if Anakin was more of a deconstruction of the Chosen One trope contained entirely within the prequels. The obvious way would be if Anakin does bring balance, it’s just that “balance” is not necessarily what the Jedi expected, like if it turns out the Jedi were the cause of the imbalance and he brings balance to the Force by toppling them.