She means ‘mundane ‘ as a compliment:
Here‘s the text of Judge Vinson’s opinion in Florida v. United States Department of Health and Human Services. It’s 78 pages long but quite clearly written, and much of it summarizes the Supreme Court case law. If you don’t know the cases, I think you’ll find that part readable. If you do know the cases, I think you’ll find that part easily skimmable. The meat of the opinion begins at the bottom of page 37, and it follows arguments that should be familiar if you’ve been reading about the litigation.
Althouse: Judge Vinson’s utterly mundane opinion striking down the health-care law.