The way he drew even nonhuman characters was dismissed by many critics as being overly simplistic.

【翻译】许多批评人士认为他画非人性人物的方式过于简单化。

【分析】主要结构：

The way was dismissed as being overly simplistic.

这个方式被认为过于简单化（而被驳回）。

dismiss sth. as being +adj. 结构：  as being overly simplistic 是宾语补足语。

被动语态时， as being overly simplistic是“主语补足语”。being 是动名词。