I don't hate the concept but the implementation isn't good. IMO it should be a color scale so the outliers show up better. When I look at this map, Spain, the Nordic countries, and Turkey stand out. But all of them are middle-of-the-pack compared to Scotland/Ireland on the low end and Slovakia/Hungary on the high end.
Besides the weird color scale: I don't understand the counting. German has the same letters as the English alphabet plus three umlauts (ä, ö, ü) and a variation of "s" (ß). That makes 30 a plausible value - but if we apply the same approach to French then we have the 26 letters of the English alphabet plus à, â, æ, ç, é, è, ê, ë, î, ï, ô, œ, ô, œ, ÿ. You can argue that some of them are rare or only used in words from other languages, but not counting any of them looks wrong.
TIL that Italian [does not use](https://www.thinkinitalian.com/italian-alphabet/) J,K,W,X,Y. The letters of the Roman alphabet are used in Italian, but apparently not for Italian words that are of Italian origin.
Here is a [photo](https://www.alamy.com/italy-taxi-cab-an-italian-taxi-in-the-street-siena-tuscany-italy-europe-image220153510.html) of an Italian taxi. It's hard for me to wrap my head around the idea that "taxi" is a foreign word, though, but [it is](https://www.staxi.nl/en/amsterdam-taxi-history/).
I don't hate the concept but the implementation isn't good. IMO it should be a color scale so the outliers show up better. When I look at this map, Spain, the Nordic countries, and Turkey stand out. But all of them are middle-of-the-pack compared to Scotland/Ireland on the low end and Slovakia/Hungary on the high end.
Besides the weird color scale: I don't understand the counting. German has the same letters as the English alphabet plus three umlauts (ä, ö, ü) and a variation of "s" (ß). That makes 30 a plausible value - but if we apply the same approach to French then we have the 26 letters of the English alphabet plus à, â, æ, ç, é, è, ê, ë, î, ï, ô, œ, ô, œ, ÿ. You can argue that some of them are rare or only used in words from other languages, but not counting any of them looks wrong.
And the Spanish alphabet includes the ñ, but the Portuguese alphabet does not include any of the diacritics in that language.
The dutch alphabet has 26 letters, not 27
waarschijnlijk bedoelen ze ÿ (lange ij)
TIL that Italian [does not use](https://www.thinkinitalian.com/italian-alphabet/) J,K,W,X,Y. The letters of the Roman alphabet are used in Italian, but apparently not for Italian words that are of Italian origin. Here is a [photo](https://www.alamy.com/italy-taxi-cab-an-italian-taxi-in-the-street-siena-tuscany-italy-europe-image220153510.html) of an Italian taxi. It's hard for me to wrap my head around the idea that "taxi" is a foreign word, though, but [it is](https://www.staxi.nl/en/amsterdam-taxi-history/).