I really don't like it because it's inaccurate and moreover, it infantilizes the chess variants family. It's like saying that if you don't play orthodox you believe in fairies, and it's not that there couldn't be some pieces that are fairy themed. Without going too deep, the sage from courier chess represents a wizard, even I am not against mystical thematic, it's just that it's not just all and by this means it's not representative of all the variants family.The most popular chess sets in the history of occidental culture, are medieval warfare representations, and in my opinion that must stay a canon, what's metaphysical in an archbishop or a chancellor? they are real medieval figures! Should I not say that some variants nomenclature gets me sick, terms like alice chess, grasshopper, amazon, nuclear, lion, wolf, should be avoided and employed only once duke, count, prince, page and all other names are exausted, that's my opinion.Going back to the topic, the term variant is accurate but vague and misleading because it misleads with chess openings that are also called variants.I sugest that instead we use the terms extension,extended and non-standard, as is used in other type of games, because they are accurate and respectfull, we play extended chess games with extended chess sets, in extended boards with extension pieces, not fairies.
However it's all chess and mad queen is just another variant of chess, I'm getting back on my words but I can't stay away from the fact that mad queen is considered standard, so in that pov the terms variants, unorthodox, extension and non-standard are ok when talking relative to fide standard, but by no means fairy, please stop using fairy as a term in this site.