No, it's not pointless but you have to be predicted AAA or something like that because medicine is really competitive. They're just saying that because if you don't have AAA, there will be a tremendous pressure to meet those offers. You have to have a strong personal statement, sound interview, and stellar grades at GCSEs to be competitive. Lastly and more importantly choose the right university! One of my friends has applied to really top unis for medicine with the likes of Imperial, Oxford and KCL but I'm not widely surprised that they got straight 4 rejections, despite getting really high grades at GCSE and their AS levels. It's due to the fact they've got a fairly average UKCAT and BMAT which ultimately made them a much weaker candidate, so you need to do your research on this! Choose a university based on your strengths!