I mean, besides the fact that generally I don't think overt corruption is that much of a problem in the U.S., the fact that anyone involved with this case will be under a massive microscope and that Delaware as the general standard place to do business deals with many large transactions so this one may not be all that impressive to local judges
Delaware sets the gold standard on corporate law, and has a special courts of law and equity (the CCLD division and the Court of Chancery) that are set up to handle high-value corporate matters.
I don’t think most American judges are susceptible to any kind of bribery (other than jurisdictions where elected judges may expect campaign donations from litigants), but Delaware has to be among the absolute least likely to have that issue.
Their reputation and their being paid very well to handle a huge proportion of corporate law in America efficiently and fairly. They’re a huge part of the reason everyone domiciles their companies there.
That may have been part of the original reasoning, but now Delaware has built up the world’s most reliable corporate legal system, and companies like a reliable legal system very much.