In my opinion, and that's all that any of this is, our opinions, if you don't / didn't like yuengling, it was either built up too much before you tried it, or you over paid for it. If you were told it was the best beer ever, you are going to be disappointed, or if you paid high end craft beer prices for you are going to be disappoint. But, if you are comparing it to and drinking it at BMC prices, it is signifignantly better than anything else in that price range. It would be like getting shiner for the same price as bud. If you are paying Sam Adams prices for it then you would think it was over rated.
Or, you really just dont like it, which is fine too, opionions being subjective and all.