Not at all! It would surprise me if someone had gone without food and shelter and then insisted that self-actualization was more important to them when they were cold and hungry.
1 in a million outliers do exist, some folks are even literally wired differently.
Why? For the record, in my early twenties I moved to a city, fell in with a bad crowd, was robbed of my savings, and ended up living in my car for a time. I lost almost a pound a day that month. At no point did I start thinking differently, like a reptile or robot (or whatever you're imagining), or stop thinking about myself as a personality or a soul. Soft-science textbooks are manipulative bullshit.
Limited shelter plus forced fasting is a way to achieve self actualization, learning both the limits of your body and discipline. Only to a degree, too much and you’re physically injured perhaps permanently.