No, it's a big deal. The oxygen existed ~300 million years after the Big Bang. So what has to happen is hydrogen and helium have to coalesce into galaxy and into nebulae, some event probably has to trigger star formation and the stars created have to be really large.
To put this in persepctive, our Sun, which is larger than the median star, produces no oxygen and is ~4.5 billion years old.
Larger stars are theorized to undergo the so-called CNO cycle [1]. To get to this process after "only" 300 million years means the star or stars are truly massive.
Along with the first stars being massive the JWST is showing giant quasars with mostly gas around them which may not quite confirm direct collapse black holes, but it is pointing in that direction very strongly.
To put this in persepctive, our Sun, which is larger than the median star, produces no oxygen and is ~4.5 billion years old.
Larger stars are theorized to undergo the so-called CNO cycle [1]. To get to this process after "only" 300 million years means the star or stars are truly massive.
[1]: https://en.wikipedia.org/wiki/CNO_cycle