LLMs are great because of exactly that: they solve things that have no other solutions.

(And also things that have other solutions, but where "find and apply that other solution" has way more overhead than "just ask an LLM".)

There is no deterministic way to "summarize this research paper, then evaluate whether the findings are relevant and significant for this thing I'm doing right now", or "crawl this poorly documented codebase, tell me what this module does". And the alternative is sinking your own time in it - while you could be doing something more important or more fun.