Okay, your first statement... denigrating another human being and making an ill-founded claim that Vinman is irresponsible with his hybridizing. If your going to make a claim, back it up with the reasons you have for believing your claim to be true. Does Vinman release his hybrids to unsuspecting people as non-hybrids or is he honest if he gives or sells such a hybrid to another? In short, does Vinman seek to actively deceive with his hybrids? Vinman, "It is a f2 50/50 cross and looks like a pure gray band. I don't want to sell her to anyone and I don't just want to cross her to anything that my will make young that look pure." Yeah, that to me does not support your statement that Vinman is unethical or otherwise irresponsible in his hybridizing efforts.
Now personally, I know many hybridizers that would say that Vinman not crossing his hybrids back to parents is limiting his true potential as a hybridizer as well as limiting his eventual phenotypical expressions in his hybrids. Backcrossing, sibling crossing, and outcrossing are all valuable tools in a hybridizers arsenal. Many might argue that there are hybrids that may have something hidden in them that will not be discovered or magnified enough to warrant the release of that hybrid, but further working with that hybrid may elicit a stronger response or a more noteworthy phenotype to arise. Some genes have a compounding effect or a synergistic effect on each other.... some gene combinations between different species can even elicit phenotypes that did not exist in either species. I'm talking about changes that are not merely a blending of traits, but traits that are completely differently expressed when mixed from different species. I'm off my soap box, but for what its worth... Vinman is ethical in his hybridizing to the detriment of his eventual hybrid creations if you ask me as he is stunting his true potential by missing out on crosses that look too much like one of the original parent species. This is my personal opinion. I realize you may agree or disagree with me and we can leave it at that. It can not be argued though that sibling crosses or inbreeding in general is a fast way to uncover the good and the bad so to speak in an animal as inbreeding results in increased homozygosity. Someone that utilizes this method of breeding to any great extent must be willing to cull with a ferocity that is often lacking in other hybridizers, but it is also a good way to remove unwanted genes as well. With all of that rambling now done... I salute Vinman for his efforts even though I don't agree with how he hybridizes as I personally think he is stunting his efforts.