@Gargron I'm not sure if you really have something you can say is an improvement. Your response actually makes it clear that you reduced 8 values to 2 responses. I hadn't even really realised that.

My comment isn't really about what the options were, but more about "survey methods". How you can't entirely trust the data you collect.

It bothers me a lot less in this situation, than if something like this is coming from a government, or other "space" which should have the knowledge.