The phrase comes from French internet slang where de Wish is added to anything to mean a low budget, knockoff version, after the Wish shopping platform became known for cheap imitations. Allemand de Wish therefore labels a German imitation that is not convincing at all. The clip spread in short meme edits and soundboards as a ready made reaction for bad translations, fake accents and discount copies of something normally premium. It stays popular because the joke is understood even by viewers who do not speak French or German.