I’m not sure what you mean by “entail”. That implies to me something that you could be if you wanted to do what it involves. I could be wrong, correct me if I am.
Yekkes, as indicated above, are those of German descent. They have different minhagim, some of which include each adult male making his own kiddush at the Shabbos table, woman lighting only 2 candles – no adding more for children, boys wearing a tallis after Bar Mitzvah, waiting only 3 hours after meat until eating milk.
To be Yekke, you either have to be born one (males) or marry one (females).
Now there is a very different concept of being a Yekke that is often spoken of. One midda of Yekkes is known to be their promptness. This is a trait that is inherent in the people of that region, not just the Jews. Also Swiss people are like this. I once went to an appointment with a doctor who happens to be a Jew from Alcace. I was running late and even the taxi driver told me “Oh, you don’t go to Dr. _____ late.” This type of Yekke everybody is free to be, and is actually a worthy midda to work on.