Yes. Building and effective REST client is actually really hard and if I want widespread use of my API, I'm not going to be handing out REST manifestos and expect everyone to read all 800 pages of it and retain everything. Otherwise, what's stopping developers from creating on an "easier" platform that uses GET site.com?action=delete&user_id=3 syntax? I can't assume anyone, not even devs, are smart enough to use an elegantly programmed system, so I provide the ability for RESTafarians OR infant PHP developers to use it.