I mean you could have made a similar argument about the productivity benefits of smoking cigarettes 100 years ago. Just because a lot of people are doing something doesn't mean it's valuable or that we have an accurate picture of the cost/benefits. The verdict is still very much out on LLMs.
Any new product that gained +1M paying subscribers (Github Copilot) in its first year is a success. You cannot like it, that is allowed. And it may not help you, but +1M subscribers is a lot of people.
They are definitely here to stay until they are superseded by even better technology or it gets sued into oblivion.