Yes, absolutely. The idea that nobody should starve because they can stroll up to an intersection and fill their pockets is based on a lot of assumptions that are simply untrue.
The US is huge, some people would have to hitchhike quite far to get to a high-traffic area. There's also no guarantee of receiving any handouts at all, so I'm not sure I'd use the word "easily" (or even "possible"). And after hitchhiking and begging all day, praying for a few bucks to buy rice, you're not actually going to want to buy rice. You're going to want alcohol, or something fatty and sugary, or just plain drugs.
Your framing of this problem trivializes a terrible, dehumanizing experience, and is out of touch with the reality of the impoverished middle-American.