You just said you used to be a big Trump fan because he was going to get rid of income tax but he didn't so now you don't like him.
Like I said. you didn't actually do any research on how a president gets rid of the 16th amendment. In your mind, you thought the president would wake up and say, hey let's get rid of the income tax because I promised to do so.
The US doesn't work that way. The president has to follow the law, so you should do your research to see if Trump can do that or not and if he can, how long would it take to go through the process of getting rid of income tax.