Thanks for the heads-up! Upon looking into the matter more closely I discovered that the worst that may happen is the charger itself could eventually brown out but has over-current protection, over-charged, short-circuit, over-heat and over-voltage protection in it that will prevent damage to the 6p or vehicle. What Benson is describing is that 3A devices could try to pull 3A from a 2.4 rated charger, resulting in the charger eventually failing but due to all of the protective layers that means the charger and only the charger will be affected, not the device on the other end. Also keep in mind his testing was on a Chromebook Pixel and not the 6p which has been charging just fine so far.
In layman's terms, it will break itself before it harms my phone or car. Aside from that, I'll just keep using it until a Car adapter gets made that meets official specs. Nothing to worry about, if anything there's a chance that the Tronsmart might not be putting too little juice to the phone rather than too much

But from my anecdotal experience it has been charging my 6p far quicker than my older USB A car chargers did for my older USB A phone.