Why?

Because people should be looking to expand their knowledge by getting into the details. By handwaving those details away with an AI summary that may or may not actually summarise the article correctly, people lose the opportunity to learn.

If your attention span or cognitive capacity can’t get you through a basic Wikipedia article you need to work on that, for your own betterment.

If you’re reading an article and you’re lost in the weeds you should be taking a step back to simpler concepts in Wikipedia (or elsewhere) first. Don’t trust a LLM to make a coherent summary about a topic you can’t understand, because you won’t be able to tell if it’s feeding you bullshit.