Despite IPWatchdog's hugely pro-patent bias, there's at least one thing I can agree with them on: "...the Patent Office has become more arms dealer than honest broker."
Would you expect the director of the patent office to be anti-patent?
It might be true that it's likely that directors of USPTO are "pro-patent", but OP's point was that the USPTO ought to be less "pro-patent".
Put another way, some government offices are charged with making more of an intrinsically good thing. "Justice", "Education". I expect the leaders of those departments to be pro-justice/education/whatever, just as I expect everyone else to be in favor of these intrinsic goods, insofar as we can agree on their goodness.
OTOH patents are not an intrinsically good thing. There is such a thing as too many patents, or patents issued too freely, or whatever.
"To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;"
Not much latitude there.