These differences are mostly superficial. We all need to decide if we're going to avoid a language because its punctuation choices aren't "good enough" for us or if we're going to choose the best tools for building useful systems.

"orReturnErr()" seems quite against the Rust philosophy though — refusing the method call syntax for early return means folks can easily miss something important. Rust uses ? for error handling, ! for macros, and keywords (with no parenthesis) for other control flow. I prefer it that way.