That’s not what I said, where did you read that? The sentence you quoted doesn’t say that. I did suggest that the fact that it’s easy to understand makes it a good name, and I think that’s also what makes it a good trademark. The causal direction is opposite of what you’re assuming.

> retina display > see high resolution

The phrase ‘high resolution’ or ‘high DPI’ is relative, vague and non-specific. High compared to what? The phrase ‘Retina Display’ is making a specific statement about a resolution high enough to match the human retina.

You said the phrase wasn’t easily understood. I’m curious why not, since the non-technical lay public seems to have easily understood the term for 15 years, and nobody’s been complaining about it, by and large.

I suspect you might be arguing a straw man about whether the term is understood outside of Apple’s definition, and whether people will assume what it means without being told or having any context. It might be true that not everyone would make the same assumption about the phrase if they heard it without any context or knowledge, but that wasn’t the point of this discussion, nor a claim that anyone here challenged.