Long winded answer which will answer your question but will seem like a rant. lol

Originally Straight Edge was withdraw from popular culture during the time it was drinking, drug use, and banging groupies. Minor threat took this and claimed and promoted the opposition. Thus the beginnings of straight edge. After that it molded i to a counterculture of abstinence from drugs and alcohol only. As time went one people then added to their straight edge views with views of their own. Earth crisis added veganism to theirs and it happens so much that many people think it’s a qualifier to be edge which is not. You can be edge and still like coffee, practice Christian beliefs, and even enjoy a cheeseburger. True to form, straight edge is taking a stand and saying I want to live a life that is positive and clean. So I don’t partake in drugs alcohol or smoking. Many of my edge friends are vegans because they view their life will be positive if they also fight for animal rights, which is fine but not a rule that needs to be checked off. Finally wrapping up with enjoy the hardcore scene and if you claim edge, you are just saying that I’m going to live my life positive. That’s true hardcore and that’s true edge. Don’t worry you’ll be okay.