English is not superior to all other languages. It's just pervasive, enough so that many propgramming languages have English constructs built into them. If we're designing a system that uses natural language as a programming language, English is optimal since it's the most familiar.
Timelines are often used in novel writing. For example, the timeline workflow in Manuskcript. The concept can serve a similar purpose in writing historical articles but would probably hinder writing math proofs or technical manuals. For an editor, the feature should be accessible but hidden by default.