Nope. Cloaky camping is a-okay. He does nothing, until he does something you should be prepared for anyway. Plus do they help keeping botters and RMTers from raking in billions literally risk-free without any danger of losses which would hurt their income stream.
Also: There’s already a thread about this. If you want to join the other RMTers in wasting their time, then feel free to air your irrelevant opinion where it belongs:
Please tell them Sol said Hi!