Its scope seems excessively limited and, having been applied to a total of six questions so far, the tag alfabeto seems unnecessary to me.
Especially as, of these 6 questions, 2 are actually about diacritics (here and here), one about numerals (algarismos, here), and one about names (here), leaving only two questions that carry the tag truly appropriately (about the name of a letter, and the presence of "k", "w" and "y" in the alphabet).
I'd suggest it's deleted.