There are two issues that others have brought up here: one IS about my child, one is not, but some are trying to make it about my child.
The latter is what the OP brought up. It became relevant to my child when people made this about their own agendas rather than about this deaf child. Lampooning the issue in silly dramatizations, such as is done in this video, politicizing the situation and using the CI as lightning rod deflects from the reality of this situation, the child's needs and the real abuse (which has very little, if anything to do with CIs). This very painful story of a damaged and hurt child demonstrates a horrific breakdown in communication between parents and between these parents and this child. But rather than take issue with this, some make it about the CI, about themeselves and their own fears.
Statements made about CIs and how resources are used to support her as a deaf child are about my daughter. Just as audism harms each and every deaf person on a personal level (real audism, not some of the silly issues that people often declare as audism, undercutting the meaning of the concept), so do misconceptions about the motivations behind getting CIs and the mechanics of how they work and what resources are used to support their existence harm each and every deaf child with a CI.
Taxpayers do support my daughter, yes. But not by paying for her CIs. They support her education. Why on earth are you taking issue with the fact that deaf children receive support generated by taxpayers? What that support is (whether CI or ASL-based education) is NOT for you to judge or decide based on your own personal values. Do you think I want my neighbors protesting the use of a whole lot of school resources to send my child to the school in which she thrives because they would prefer she attend an oral school? Or be mainstreamed? That's not for them to say -- even though it's their money sending her there. And it's not for you to say. It's also not for you to judge whether our medical care goes to CIs or brain surgery or braces -- especially since it's not your money providing this (but even if it were, even for the handful of retirees and disabled using medicare for this purpose -- it's not your place to make the decision about what they do with the care that is rightfully theirs).