A decent rendition of Oedipus but also not as good as Sophocles' version for its great lack of focus: not once but twice Seneca indulges in his biggest sin as a tragedian, which is the chorus, who, instead of narrating the story and serving as a sort of collective-anonymous audience insert, sings instead about fucking Dionysus's deeds. And I mean, are they relevant? In what sense? Because a few of the mythological events related to Thebes they mentioned very vaguely parallel the Oedipus family line? Oh, Jokasta fucks Oedipus but at least she's not as bad as the lady from the Bakchai since that one tears apart her own kingly son? Fuck off, that's nowhere near enough good of a parallel to have the Chorus sing for like a fifth of the whole play about the jolly, ecstatic deeds of Dionysus, considering the gloomy tone of the story, the connection is, what? the Dyonisic cult originated in Thebes? So what? It doesn't justify turning the pages into messes of footnotes due to the absolute overabuse of geographic adjectives and names in the references to the mythology, some of which are straight up fucking wrong because Seneca got his geography, that he's smugly showing off to his educated elite Roman audience, wrong. Bleh.
It is not as bad a flop as his Agamemnon, since there you still do have that issue (although it's much less worse since there it's actually relevant) but also the fact that Klytemnestra is at once the espousing the Senecaist stoic philosophy and the one to go apeshit on her children, it's still a decent rendering of the Oedipus myth, but... not as good as Sophocles', not as focused.