We're talking about metrics with objective definitions that are taught in schools around the country, not headlines like "The President is cancelling his trip to Africa because he hates black people". I don't know, seems like a huge difference to me...

No. If the media reports that the average salary is $50k/year that is not disinformation even if a lot of people will misinterpret it as meaning "most people make $50k/year" simply because they don't understand that an average is a measure of central tendency, not distribution.

Something like this only rises to the level of disinformation if the media (or whoever) deliberately presents an accurate piece of data in a way that it knows will not be understood.

If metrics that average people don't understand was disinformation than 90% of my job would be disseminating disinformation. It's not. Instead, a large part of my job is explaining the metrics.

The public being too ignorant to interpret analysis isn't disinformation.