The name Africa was given to the continent by European explorers, exploiters, slavers and colonists. It ignores the indigenous people and their accomplishments.
Research paper: https://www.tandfonline.com/doi/full/10.1080/14725843.2021.2017262?needAccess=true
“Anaesia” may have Igbo origins, but it sounds too Latinate. If one had to guess what it meant, a reasonable first guess would be the condition of not having a nose, or believing oneself to not have one.
Having said that, the idea is not without merit. See also: decolonised names like Aotearoa (New Zealand), Uluru (Ayers Rock) and Turtle Island (what some call North America).