Qatar is the key US ally in the Arabian Peninsula & the US has a major base there on which it relies for much of its efforts against ISIL & other like-minded Sunni fundamentalist factions in Syria/Iraq. Turkey, a NATO ally of the US & the US's somewhat unreliable ally on the Syria/Iraq scene, also supports Qatar. Egypt (its domestic stability being key to US regional policy) relies significantly on the remittances by Egyptian nationals who work in Qatar.

It is true that, while Qatar in several ways plays a modernizing & moderating role in the region, it also serves unofficially as a conduit for funds for ISI, but so does Saudi Arabia and its allies in making these demands.

The Saudis made these demands shortly after Trump's visit & the US remains very silent throughout.

Why shouldn't we see all this together as further evidence of confusion & incoherence to a dangerous & destabilizing extent in US Middle East policy, especially whenever Trump becomes directly involved?