Trump has stopped military exercises near North Korea, but he has not initiated any plans to withdraw troops. His reason for stopping the exercises is that they are provocative and expensive. He has a point: If the heads of state are talking then we are less in need of fighting practice in a scenario where heads of state are not talking.
The military exercises with South Korea are expensive and provocative, as Trump explains. Frankly, they should stop. With healthy conversations and progress toward peace already behind us, there won't be a need for those drills any longer. Rehearsal for conflict that might never exist can often provoke the very conflicts we otherwise would not need to prepare for. As for the "expense" defense, few accountants will argue in favor of nickeling and diming away money as fiscally responsible and no one believes that taxpayers' pockets are infinitely deep except pundits with portfolios in public funding.
The Western news is that Trump is wrong, specifically with regard to China that China wins. According to this week's Western news narrative, China wins because of troop withdrawals that haven't happened, because a friend of China will de-nuke, and because over 30k US troops will be free to go home—or go to Taiwan, Mischief Reef, Vietnam, the Philippines, Japan, or any number of other Pacific island-nations China doesn't get along with.
Economically, China "wins" because manufacturing is leaving China—which must therefore mean that China's innovation and science is the new source of manufacturing elsewhere. Perhaps that includes innovation and science like the Chinese government now trying to track every car with a chip as of 2019. The "Mad Scientist" theorem of the experimental police state research moving from North Korea to China continues to play out.
Just remember with everything: There's more going on than anyone can see. Deals between governments are never fully explained to the public. They shouldn't be. But, as peace develops in one part of the western Pacific, hostilities move around and every pundit seizes opportunity to say, "I was right." No conflict is without news profiteering.