funny how people that say this are often the ones bombing the interview.
usually the ones who score well, are the ones that see how the simplicity of the given problem gives them room to show how well they understand the domain, and they appreciate it.
Don't judge a company by its tests, if they're easy for you to do it's not a slight on the company or the skills required.
At the time, I didn't realize _that_ was likely what they were evaluating, but in my experience interviewing engineers since then helped me realize what I'd overlooked.
I mentioned they passed on me mostly for transparency given the rest of my comment, but I can understand how it might have sounded otherwise. I liked their concept and stayed connected for a while after, not something I normally tend to do if there's bad blood.
Having said that - over the years, I now much prefer conducting interviews where interviewer and candidate walk through a problem, figuring out a solution together; they provide much more insight into a candidate compared to rote memorization/whiteboard tasks like "Implement a linked list". So, in the end, I've learned to appreciate their approach.