Is GetHashCode just a cargo cult?

HttpContext.Current.Items["ctx_" + HttpContext.Current.GetHashCode().ToString("x")]

I see this exact code all ... over ... ... the place , but I have to ignore something. Answers to these messages often raise the question of the appropriateness of using an HttpContext, but no one indicates that GetHashCode is redundant and a fixed line will do.

What am I not seeing here?

EDIT: The question is, GetHashCode () will be the same for every HttpContext.Current, so why use GetHashCode () in the four links I provided? Some of them are recordings with quite a lot of work, so I feel that maybe they solve some problems with threads or context that I skip. I don’t understand why just HttpContext.Current.Items ["ctx_"] will not do the same.