at just a glance I have some theories:
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the project was named after the creator. Maybe they wanted it to seem more community organized
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Food reference. Foss developers often name stuff after food, Idk why. Maybe cuz they like mangos (I do too).
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Dodges copyright or trademark issues. Certain things, like town names (wayland is a town in the US) are essentially uncopyrightable/trademarkable, so by naming your project after those you eliminate a whole host of potential legal issues.
These are just theories though. No reason is actually given, at least not that I could find based on 30s of searching.