While this might be a good motivator, it's not quite true. Specifically, your future states (ie 'the future you') are not 'you' in the precise sense that they would need to be in order for TDT to be directly applicable (that is, applicable in the same sense in that it's applicable to Newcomb-like problems). You could make a case for TDT being at least as applicable as it is in the case of acausal cooperation with entities similar to yourself, but I for one have always been somewhat skeptical of that logic.