You can buy a cheap alignment tool for $10, which is still used on some mods.....lathe, one time purchase, which is used in modified also....don't need a dyno (please note signature....no dyno was with me at any of those events)....though, Dyno STILL would be used in modified also...
The guy was referring to RTR motors and the like....DC brushed motors are a much simpler device than a brushless motor is.....if your speed control blew up, you could go to radio shack and get a micro-switch and get the thing to run.....you can't do that with a brushless motor...
And traction control could be developed, just ask Oscar from Orion.....he has spent quite a bit of time researching it....it however, would not be as effective as one with a sensor on each wheel....
Later EddieO