Well, the weight argument now is because of electrics, but honestly that's not really even a factor anymore. When you can buy an ARF pattern airplane for $650, a motor for $200, and bargain batteries and still make weight, it becomes a non-issue IMO.

The only real point of contention for glow/gas vs electric now is the point at which the airplane is weighed. The weight limit SHOULD be RTF, not empty weight.