The 17th Amendment, in isolation is not the issue.
You have previously brought it up on its own. We have previously discussed it on its own. You have previously defended repealing it on its own, even when I asked why you would be so interested in repealing it now when you had not called for it earlier.
But we can ignore your history and switch to your new claim
The 17th Amendment, in conjunction with the 16th, the Federal Reserve Act, and the freezing of the size of the House (utterly hilarious you never seem to mention THAT in your shrill claims of being about representative democracy, you craven sack) IS the issue.
I will concede that indeed you have had the overarching goal of reducing (your) taxes. If you want to campaign to destroy the IRS - and the country with it - go for it. You can fiddle while the country burns, and watch as the people you neglect leave and the prestige of the country is forever lost. But that is the 16th amendment. The federal reserve, with all its problems, really doesn't have much of anything to do with it. I'm not fond of the federal reserve either, but eliminating them doesn't really solve any problems.
Those two claims though, as little as they have to do with each other, have even less to do with your mission to axe the 17th. Your claim against the 17th is still exceedingly disingenuous and an obvious political move to take more power for your party. If you want to try to reduce the number of people that each member of the house represents, you can aim for that, but there is no obvious way to actually do that given the current physical structure of Washington DC.