LLM are poor snapshots of a search engine with no way to fix any erroneous data. If you search something on Stack you get the page with several people providing snippets and debating the best approach. The LLM does not give you this. Furthermore if the author goes back and fixes an error in their code the search will find it whereas the LLM will give you the buggy code with no way to reasonably update it
LLM have major issues and even bigger limitations. Pretending they are some panacea is going to disappoint.