I agree, I don't think "normal" users will use it as it is now but that shouldn't be too difficult to develop an UI that will take care of building the appropriate JSON and post it on the Steem blockchain. However, I think that this tool is still kind of developer oriented (like all smart contract platforms) and I think that someone that develops a smart contract on this platform should also provide the appropriate UI (that will best fit his app). I would say this tool, right now, is the lowest layer of the dapp (it's like the ETH or EOS layer), then other tools need to come on on top of it to make it even funnier to use :)