Calling it "good and bad elixir" was probably overly charged. Its a little late to change it now, but something I'll consider in the future.
can you elaborate more on the "Don’t pipe into case statements" point though? Not entirely what you're saying with this one as there isn't any explanation why one might be better/worse than the other, other than aesthetic/personal preference. Needing to access the result from the previous pipe in the case maybe?