Germanic does not mean the same as German. Indeed, in many (perhaps most) other European languages, the two words don't even look alike. The Norwegian word for "German" is tysk, while the word for "Germanic" is germansk. In German itself, it is deutsch and germanisch; and in French, it is allemand and germanique. English is one of the few languages where "German" and "Germanic" can be confused with each other. The fact that Ancestry does mix these concepts up, reveals the company's fundamentally Anglocentric outlook on the world. It is not really surprising that they have such an outlook, considering that Ancestry is a US-based company catering primarily to English-speaking customers, but this does not excuse their sloppy grasp of basic ethnolinguistic terminology.
In addition to the problems surrounding the terminology itself, I also find it very problematic to talk about "Germanic" Europe in relation to a genetic cluster which
In my opinion, Ancestry should scrap the label "Germanic Europe" and give the cluster a better name. I personally like FTDNA's "West and Central Europe" label, which illustrates the interconnectedness of the peoples inhabiting the western and central parts of Europe. Since Ancestry has "France" as a separate category, perhaps they could use the name "Germany" for the residual category. Yes, this cluster encompasses areas outside modern Germany, but in this respect, the "Germany" label would be no more or less accurate than "France", and it would certainly be more accurate than "Germanic Europe".
Update: Thanks to Mr D. Bennett for pointing out that the English word "Germanic" does have the additional secondary meaning of "having characteristics of or attributed to Germans or Germany". The word does not have this meaning in the Norwegian (except perhaps in somewhat archaic usage), nor, as far as I know, in any of the other languages I have mentioned in this article. The fact that "Germanic" has such different meanings and connotations in different languages is interesting in itself, and shows the need for caution in the naming of admixture clusters in order to reduce the risk of misunderstandings.
I look forward to seeing the new update fully rolled out, so we can read Ancestry's reasoning behind choosing the name "Germanic Europe".