It's not that simple. I mostly got rid of my ADD and haven't noticed any disadvantages beyond learned behaviours that are not productive anymore. You definitely don't need ADHD to keep up with information - for me it's easier without. I can jump between topics, but can also choose not to - that was not an option before.

The occasional hyperfocus is not necessarily helpful either - hours of sleep sacrificed to continue doing something fun are not a great outcome.