I feel that Traxxas is more like the Apple of R/C, you pay way more money than what the product is worth, and for some crazy reason, people still love their inferior products, completely mind boggling to me.

There is no danger in using adapters... yes you will add resistance, but it will be insignificant provided you are just using one adapter... keep in mind that the adapter will eventually wear out and need to be replaced... if you start to feel heat build up over time on the connector during use, that's when you know it's time to replace the adapter.