LLM's have definitely replaced 90% of what I used to look up on a Wikipedia, simply because they integrate from so many more additional sources.

But at the same time I continue to contribute edits to Wikipedia. Because it's the source of so much data. To me, it doesn't matter if the information I contribute gets consumed on Wikipedia or consumed via LLM. Either way, it's helping people.

Wikipedia isn't going away, even if its website stops being the primary way most people get information from it.