There's more behind the tomahawk controversy than is presented in that one-sided thread. I believe Coldsteel's product line was established before the current ATC was a company.
Per Cold steel's integrety, they have a fairly large dose of it. For example, they paid Spyderco for the use of the integral clip on their most popular knife, the Voyager. Lynn has sold the Sharpmaker on his website and in his catalog for over 5 years. He gives credit to the origin of knives and swords that are copies of classic designs.
As has been said many times on this forum, knives have been around for 1000 years, many parts of knife shape, design and technology are part of the public domain. For example, many people think the balisong is a phillipino design or a Benchmade product, however the oldest balisong pictured on this forum was about 150 years old and french.