If you don't think they have contributed anything then you can safely ignore them.
Exactly what the author is doing.
Work this abstract almost certainly has no value outside the community that is (was) interested in the result. OpenAI should engage with the community to realize the value (beyond PR).
I can't 'ignore' OpenAI's paper any more than you can verify it unless you are an unusual person with a very uncommon skill set. Very few people with the skill set to look at these are getting slammed with difficult to read artifacts, which is confusing because they have internal AIs so smart that they can solve hard math problems.