For non-lawyers let me explain:
Dicta is an expression in a court's opinion that goes beyond the facts before the court and therefore are individual views of the author of the opinion and not binding in subsequent cases as legal precedent.
Anyone who claims that Roberts will restrain the use of the commerce clause is unaware of the legal meaning of dicta or they are flat out lying.
o·bi·ter dictum (b-tr)
n. pl. obiter dicta
1. Law An opinion voiced by a judge that has only incidental bearing on the case in question and is therefore not binding. Also called dictum.
2. An incidental remark or observation; a passing comment.
In a few years—when half or more of our income is going to the federal government—he can say that he was misunderstood about his observations on the commerce clause. And then they take what’s left.