That's a straw man. You're leaping from "some type of tax is justified" which is quite a bit more reasonable than "any tax".
And if you want to say it's a slippery slope or some such, well, ever single action if extrapolated to the extreme can be a viewed as such. If 3% is reasonable and then it's proposed to goes up and up, fight the increase, not the initial reasonable action. Of course this may be putting words in your mouth, so I won't attribute it to you, only that I preempt a logical counter to mine.