What this article tries its damnedest to elide is the narrative-wrecking fact that Holtz, confronted with a standard request to demonstrate that his product meets regulatory standards, took his ball and went home. /Exactly/ why he threw a tantrum is anyone's guess -- but there doesn't seem to be any real good possibility. Either his product couldn't meet standards and this is an attempt to obfuscate that inconvenient…
Well, maybe the reason is that these regulator requests costs tons of money to fulfill because no, you cannot you give simple laymans answers to the questions, you need a team of lawyers to do this work, because everything you say in these "simple" requests can and will be used against you. And perhaps there are better uses of their time, and better regulatory environments where they can release their product. Maybe…
I don't believe it's the case that Hotz needed to incur six figure legal bills to respond to NHTSA's initial order. He probably could have responded to NHTSA personally, without counsel, and game-theoretically not damaged his potential outcomes at all. He had the option to find out, and threw it away.