I have a mixed view on this. I don't have a traditional CS background, so when I started focusing on datastructures and algorithms a couple years ago, I found that it helped my programming. Recently, I was in a position where I had a chance to create an interview process for a smaller firm. I included some algorithm questions, but it was roughly 25% of what mattered. We looked more at communication skills and past work. Judging someone on a random algorithm question seems a bit too harsh for me. Even the best developers probably have some holes in their algorithm knowledge and would miss a few leetcode "easy" questions!