they are "in control" in the sense that they can assert that control when they want. But they are not regularly using that control... if they had total dominance they would be flying tons of sorties and dropping stuff on Ukraine directly.

they are not doing this. presumably because the losses would be too high.

you do agree they are not flying sorties as the USA might be doing when it has air dominance. Why do you think that is?

Remember air dominance means you have disabled all surface to air measures of the enemy. Do you think Russia has done this?