It appears that hacker news users upvote anything with machine learning or tensorflow in it. This is merely a fifo queue implementation, which is not particularly significant any way. Why it was submitted, much less upvoted, is nonsensical to me.
But I agree with your assesment, I have noticed several barely interesting blogposts/arxiv papers upvoted.
A more extreme version of this is situation is of the medical researcher who "reinvented" on his own the trapezoidal rule for numerical integration[1].
[0]: https://xkcd.com/1053/ [1]: https://fliptomato.wordpress.com/2007/03/19/medical-research...
Looking at [2] without having context of [1] can be confusing. But no one is trying to pass this off as "innovation".
[1] https://www.tensorflow.org/performance/benchmarks [2] https://www.tensorflow.org/performance/performance_models