That is absolutely not true. Filipinos have always been, and still are, with a very few exceptions, warm and kind to Americans. And because of this Duterte has just walked back and moderated his cut ties with America and tilt towards China rhetoric. It did not play well with his own people. He started this whole thing because he is a vain, proud man and was insulted when Obama criticized his campaign to rid the country of drug dealers including low level users by any means necessary, including murdering them, including using vigilantes. Manila may be dirty but no more so than New York. There are few places in the world where Americans are treated as kindly as the Philippines. The U.S. has many close ties to the Philippines and not just militarily. There will be no U.S. interference in their politics. Don't equate Duterte with Kim Jong Un of North Korea. He does not represent a threat to the world.
If he in fact forces America to remove its military presence from the Philippines there will be hell to pay.
Do you think we'll idly sit back while Russia and China put in military / naval bases there?
Let the fool play at being a leader for awhile, and if things are still skewed, just take him out.
Make it look like a hit by a disaffected drug dealer.
He just had a press conference in China disavowing an ongoing relationship with the US and embracing both China and Russia.
While there was no specific talk about bases (yet). it is easy to envision him letting the Chinese and / or Russians occupy the bases the US currently has, once he throws our asses the hell out of his country and takes control of the bases we currently have there.