Not super thrilled with the course so far

I am on the lab for Resource Attributes ; unfortunately , for one of the questions (#5), the answer the instructor is validating against also includes a nice to have string value - which is completely superficial, in my opinion.
Another discrepancy i came across was in the “Variable Precedence” topic . the instructor says the ENV VARS have the highest priority and in the lab, the correct answer is the cli argument -var-file ???

Not sure what’s going on here