It's there as soon as you load the page. I get it, this cookie prompt hides the important article and there's a heap of information share.
<https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...>
If available, uBlock Origin, uMatrix, or other JS / cookie blockers will help, as will incognito mode (against persistent trackers).
Firefox/Android provides for these. I'm not sure what the current state of iOS browsers is, though there is a Firefox/iOS these days.
Desktop systems afford far more options, of course.
But the discussion is off-topic.
I'm very much in favor of ad space in free publications but this looks like milking the visitors.