loved the slow walking. Story was very touching with many great details and tie-ins with the environment, I felt very immersed. Perfect and satisfying length too. Cutscene in the end was kind of a bad decision I think, would've been better with some interaction.
"you have to admit that these are flaws."
Nope. I liked the low fidelity of the gameplay mechanics in that I felt it put way more focus on the story and experience than cluttering it with unnecessary player input. Ofcourse Dear Esther was made in a budget way, but I really think the limit worked. You could make a similar game with a higher fidelity of gameplay mechanics but I don't think just giving the player the ability to jump and run around would be the best idea.