It probably is at least in part, but mainly it is probably intended to be fiction or fictionalized biography.

最少一部分是，可是结果大相径庭,大篇都是虚构或文学小说化了的自传。

耶鲁公开课 - 1945年后的美国小说课程节选

I think we can make the mistake, thinking about autobiography, that it's somehow not literary. But in fact it's very literary, and part of what makes it literary is the fact that you have to choose what scenes go into that narrative.

我觉得我们可以犯这个错误，想想自传，从某种程度上说它不是文学，但事实上它很文学,其中一个原因是你选择加入叙述的那些场景。

耶鲁公开课 - 1945年后的美国小说课程节选