Oracle cannot ignore annoying and low-expected-value static analysis tickets, but:
1) the answer should usually be either "fixed in this patch, install it" or "it's a false positive, try developing an actual exploit if you don't believe us". Not expensive, provided Oracle actually runs static analysis tools against their software and addresses the findings before releasing updates.
2) If Oracle actually runs static analysis tools against their software and addresses the findings before releasing updates, there should be very few tickets of this type to begin with, often from the debut of new tools or from naive user mistakes. Finding something, and worse finding something over and over again, means that Oracle QA is inadequate.