Even accepting that, what's easier - go into your chat options and add the channel, or stick to using LFG? I'm not talking about what's "right" or correct, either. Frankly, a better approach might be to make the AE channel on/added by default, but even then, unless there is some consequence for not using it, people will still gravitate to the general LFG one. Also, as @Rudrapointed out, AE is not the only place people farm/PL.