The reason to use it is that Reddit does provide the occasional answer to questions like "how to get a Samsung SCX 3400 to run on a Raspberry Pi" (etc.).
Now all that's missing is Chatlib, a self-hosted proxy for ChatGPT which makes it possible to a) query the service without leaving a personally identifiable trace and b) separate out the facts from the dreamt-up fiction. Using Redlib I at least get to see the original posts which makes it easier to separate fact from fiction.