LOL, no, not at all. And it's not just with Asils, or Gamefowl for that matter. They have "lines" that they are. For example, I have 100% Asils (breed) that are part Harris Reynolds (line) and part Saab Viper (line). The "line" name comes from the original breeder. It's like a stamp, a description. Denoting what the original breeder had bred, and his birds particular nuances. A line should also throw fairly consistent offspring, so it's not just a one time whacko cross that you can name as your own line. After you have bred someone's line for a long time, then you can possibly give them your own name. Mainly because they will likely have been altered, for better or worse, by your selection (or lack of) process (but then that may be taking credit that doesn't belong to you). And if you cross them with another breed OR even line, then you have to acknowledge them as such. But really it's not that easy to start your own legit "line". That's why I have Harris Reynolds x Saab Vipers and not.....Um......"Saaynold Asil". Best of all, keep them straight, select rigidly and call them what they are, give credit where it belongs and try not to shame someones line....
I actually don't know best on that subject, I'm looking forward to what you other guys have to say.
BTW, CF, some searches will bring up more results then we could provide.