... I'm in the camp that believes that poly relationships are not inherently harder work than monogamous ones. So being poly isn't harder work than being monogamous, or shouldn't be, at least.
I wasn't necessarily responding to anyone specific. Rather, to anyone who believes that relationships don't take work, or that poly relationships don't take more work than mono ones. They do. Of course they do. Doing something always takes more work than not doing something; making new relationships is "doing something."
I assumed you were responding to london.