There's plenty to bag on these guys and this event for, but I'm not seeing the bolded as being such a case. If the people behind Salient are the people behind the ADGT, it would stand to reason that they're contributing the most (time, energy, money, product) to the event and therefore warrant being the most prominent "sponsor" of the event. Can't really begrudge them that.
I agree. They're probably the equivalent of a Name Sponsor. It could be "The American Open, presented by Salient Discs".
Though even they are probably aware of the P.R. pitfalls of doing so. From the beginning, they've tiptoed carefully around tying it to Salient very closely.