Arab Emirates restrict US military - they don't want to seem like Iran's enemies. Attacks against targets in Iraq, Syria or the Red Sea are intended to be made more difficult for the USA.
The greatest domestic threat to America's Arab allies is their own people. Demands for an end to the violence in Gaza are becoming louder and anti-Israel tendencies are becoming stronger. The more brutal Israel is in the Gaza Strip, the more support for terrorist groups close to Iran such as the Houthi rebels and Hezbollah grows.