Last time I was a solipsist I was twelve. I guess this says all.
Sure solipsism is more internally consistent than poststructuralist relativism; whether my plane flies or not is not based on some kind of "narrative". It's based on how well its construction is consistent with the laws of nature. Solipsism, on the other hand, averts this. It does, however, avert every single question ever posed and marks them all irrelevant. It is futile to discuss anything if you're a solipsist since after all it's only an illusion made for you anyway. Why even talk to anyone, you can make up your own conversations and they'd be just as real as any "real" one. Why even eat? You simply imagine you don't need to and it's just as real as eating.
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...but unfortunately Pinocchio went on a trip to the sawmill years before he could even remotely resemble a real boy. You gonna cwie? You gonna cwie now? He's just a damn puppet, lol.