Forget UX, the image search itself _doesn't_ work. Search for some known person's name. 90% of the image results will be from the side bars on LinkedIn page of that person, which have no relation to the search key words.
Wouldn't that be LinkedIn's fault for (presumably) not marking the sidebar as "not SEO content"? A few other websites have been destroying my searches this way.
I started using Yandex image searching. It's objectively better than Google for many queries. So is Bing/DuckDuckGo.