Some of this advice is so weak.
You can't make a blanket statement on injectibles vs. orals as several people already have in this thread. Are you saying you won't keep any gains from oral Anavar or Winstrol? These are some of the best for keeping gains.
Can a dbol only cycle be good? Yes
Can you keep most of the size/strength if unstacked? Yes - many lifters are living proof including myself. Anyone making a blanket statement on this has either their training, diet, or genetics to blame. You will lose some of your gains and the water weight definitely but I was able to keep 70%+ both times (weight drop includes water weight).
Do you think being a total novice that you can keep dbol gains or use it correctly? Maybe - these guys obviously couldn't