The post outlines the author's reasons for departing from the Elm programming language, focusing on various challenges faced such as the growth stagnation of the ecosystem, difficulty in finding resources and community support, and frustrations with the language's limitations in modern development scenarios. The author reflects on how these issues have seemingly persisted over time, contributing to the declining popularity of Elm. User comments reinforce this sentiment, noting that even those with legacy codebases have mostly migrated away from Elm.