Taxes were only required if you converted your Crypto to Fiat,
Not true. Crypto is not the first, or even the 10th "currency-like" commodity in the history of taxation. The rules on how to do this have been LONG ESTABLISHED. Just because you aren't familiar with them does not mean the sky is falling. The minor wording change also does nothing to affect this.
All exchanges between crypto to crypto were considered (or at least arguable) were a like of kind exchange so no taxes owed.
Also not true. First of all, as I mentioned, like-kind exchanges require filing specific tax forms that you have not likely been filing. So if you are going to claim it is a like-kind exchange, you need to be filing these forms. If you are day trading, the point is already moot and you are required to pay income tax on your gains, whether or not you cash them out to fiat. Like-kind exchange does not apply to day trading and is completely irrelevant.
So starting on Jan 1st, 2018 anyone that trades on a US Exchange will be required to pay taxes on each crypto to crypto trade
for the tax year 2018 which is due by april 2019.
This is again wrong. Changing currencies is a "taxable event". I explained what this means - it means you are due to pay capital gains if you realized any. If you are day trading, this is irrelevant as you owe income tax. You are not being taxed on each and every transaction - that is silly.
Does not matter if you are a US citizen or foreign citizen, if you trade on a US exchange you will owe the US Gov. Taxes on those trades.
No, you will not.
Bittrex & Poloniex exchanges (Based in the U.S.A.) will most likely die within the year due to this tax change.
Nothing has changed.