Grumpy Old Man
Striker
The fact that it singles out one (super rich banking) family is exactly relevant in the context (taking over banks).
What you’re doing is reading between the lines as there is isn’t anything broadly anti-Semitic (talking about all Jews) in the comment.
Are the Rothschilds beyond reproach? How could he have phrased it differently to not be perceived as anti-Semitic?
Simply not mentioned them. A comment doesn't have to be broad to qualify as anti-Semitic. The trope of greedy Jewish bankers is almost as old as anti-Semitism itself, and the Rothschilds are normally singled out as exemplars. Pope's only possible defence is ignorance, and even that's pretty thin.