This is an extraordinary claim. It's the notion that Congress will raise the tax through various methods and reasoning available to it, then outraged citizens will force them to lower it back again. Or rumor will circulate the tax will be raised and outraged citizens will keep them from doing it.
Here is the guiding principle, I think. People get used to things. They have a "normalizing" mechanism. Shortly after an event change, it becomes "normal". Politicians have been using that principle for years.
You may believe it. I don't.
So, your obstructionism amounts to de facto support for the status quo, ie, the communist-inspired leviathan known as the Federal Income Tax.