Why is there a double standard though? How are your comments not viewed as racist? Should you make the same kind of remarks about the culture and stereotypes of a different ethnicity/race, you almost certainly wouldn't be met with tolerance.
It's the zeitgeist right now, and has been for a while. There are many causes and reinforcers for it, but the mania around it is dying down if it's any consolation.
On a more personal note, I only believe racism to be "racist" when it's coming from a place of hate. Commenting on other ethnicities/cultures/etc. is standard everywhere outside of the primarily English speaking countries. For example, latinos are flaky, jewish people are fussy, eastern europeans are superstitious, african americans are loud, the french are self-important, the japanese are self-effacing, the british have no taste, and american white people are boring.
Whether this comment is met with intolerance is a non-issue for me. Say what you believe, so long as you're civil, and then accept other people will not agree with you.