Turkish base which pathetically and shamefully hosts US air force assets and nuclear weapons; a very worthy and legitimate target of protest.
So you don't have any concrete information. Which US entity are you actively talking about? Currently, only refueling aircraft from the 10th Tanker Base Command, as well as some logistics and signals intelligence aircraft, are based at the base.
It is one of the six bases in Europe under the Nato nuclear sharing agreement for nuclear warheads. It is not possible for Turkiye to exit this agreement until it independently declares nuclear capacity. Turkiye's threat perception is not single-axis, but two-axis. While the NATO alliance provides assurance for one axis, it creates a conflict-free mechanism within the second axis. I am aware that it is very easy to demagogue without understanding Turkiye's unique security problem, but unfortunately this issue is not as simple as you think.
Apart from this, there is no independent US presence in Incirlik. Türkiye is part of the NAT. On the other hand, the Turkish army participates in many regions within the NATO, from the high-readiness mission command to the European base central command in Naples, Italy, with both air forces and land forces, and even serves as the term commanders of these units. According to your logic, the Turkish army has a military base in Naples, Italy or a military base in Romania.
If Turkiye leaves this alliance before completing its preparations, it will lead to a direct conflict with this alliance. Turkiye has deep conflicts of interest with some alliance countries, the NATO framework ensures that these problems are put in the refrigerator.
Again, There is no independent US presence at Incirlik base, and also there is no combat military presence within the scope of NATO. The deepening conflict of interests over the PKK-PYD has resulted in the US moving its combat presence out of Turkiye.
Edit: At the moment, there is a base and an American brigade with special priviliages within Greek territory, 40 kilometers from the Turkish border, and there are combatant American fighter jets in different air bases within Greek territory. There is also an American military presence in Syria and Iraq on Turkiye's southern border. The Turkish state sees this military buildup as a threat to its own security. Turkiye should take its steps with the right strategy and in the right order and timing. Do not rush to definitive judgments.