Would people still have problems with advertisement if it was extremely tailored towards them? I'd presume Medium already collects data on their users and their

Would people still have problems with advertisement if it was extremely tailored towards them? I'd presume Medium already collects data on their users and their preferences -- does Medium sell that to ad. companies, and is it effective in its current state? Maybe Medium can still expand outwards, such as if they created a Google chrome extension or browser annotator to save all the highlights I have on other websites that I read (e.g. NYtimes, Bloomberg); and later using that data to give better ads -- I probably wouldn't mind if it wasn't intrusive.