All true again, pre-allocation can fix lots of pause issues. And simply not using GC in tight loops. While not the greatest fan of Unity, it proved that GC (on top of of VM) is not a concern for (I argue) most of gamedev. Minecraft was originally written in Java for crying out loud yet it didn't stop it from becoming gigantic success.
Unity the engine is written in C++. When you create a game using Unity you are merely scripting the C++ engine using C#, no different than the countless games that do the same using Lua.
