It depends.
If the time I save from the summary I generate is used for stuff that is also complex then the effect is not as stated in the article.
For me AI is a tool like many others and when I use it I have to proof read, understand and compare just as much as before because I've used LLMs enough not to fully trust their output.
They provide a good starting point and anyone who just stops there and takes that first draft of work as-is has no idea what they want to achieve in the first place