I've already reported elsewhere but I don't find the report and it's been too long anyway: we currently have a simple but severe problem in the Wikidata UI, namely that it's extremely hard for users to add a new statement on a very long page. The main reason is that it's nearly impossible to see the "add statement" button unless you know very well where it is, and even if you know it's hard to find (you have to carefully scroll towards the bottom of the page, but not too much or you'll end up among sitelinks). I regularly observe this problem cause big trouble to every user I introduce to Wikidata.
At least one "add statement" button should be placed in a perfectly predictable position which doesn't require scrolling and/or is predictably reachable by following some TOC link or other method which doesn't require trial-and-error scrolling, nor manual typing of anchors, nor ctrl-f.
The easiest and most obvious solution is to add a second "add statement" button, identical to the bottom one, next to the <h2 id="claims" header or slightly above it.