That's such a weird statement.
The word "equal" has been used in maths since centuries without any baggage at all. And since a projection (how to project the surface of a sphere onto a flat surface) is a mathematical undertaking it's perfectly fine to think in mathematical terms.
I think it is actually you now that tries to impose this load onto the term, not the original name givers of the projection.
Also, this "this is loaded, let's use something else" is puny. Decades ago, "fat" was loaded. So people used "strong" --- which is IMHO blatantly wrong. But hey, people still said it derogatory, so it was burned in that context. Then it became "big". But the derogatory use stayed, so that term is now also burned in that context. And then "obese" is now used ... guess how long it takes still that word is burned, too. Seldom do people realize that they shouldn't fight the wording, but the derogatory use. But instead they attack the words. The situation stays as is, but word after word becomes taboo. How nonsensical!
Also observe how I wrote "in that context". I talked about "fat", "big" and "strong" in context of body mass. But then some SJW come and declare these words to be bad in any context. Eventually we can't fish a big fish anymore ... because some idiots hijacked the meaning of "big".
Loading up completely normal words is IMHO nonsense. In conclusion, Equal Earth is, to me, a very fine name.