I don't think written complexity of Chinese linked to "least logical". Since kanji is composed by parts, isn't it logical? (though it's complex)
Some characters are moderately logical. A tree, 木, begets a wood, 林, and a forest, 森。日, sun, in triplicate, 晶, is a crystal or glittering. But these are very much the exceptions. By what logic would you create a character for a whale (鯨) as distinct from a salmon (鮭), or for abstract concepts like government (政) or crime (罪)?