Hardly! Quick -- think of Sen. Chuckie Schumer, mister in-your-face; think of Jerry Nadler, Representative from NY/McDonald's -- do THEY strike you as "on guard"? "Holding back?" I don't think so.
Then what do you think motivates their behavior and why?
Don't get me wrong....Schumer is, IMHO, such a despicable character that anything he says or does is immediately suspect. But a number of Jews are concerned....they are "on guard". And they do hold back on certain issues - for example, the issue of Jonathan Pollard (I'm just using it an an example - don't start a separate thread about the issue) doesn't receive the support of these "high-profile" Jews. They are "on guard" and "holding back". With Mel's movie, they aren't....for very obvious reasons.