Ridiculous and untrue. NOTHING wrong with using Deca and or 19 nors, but like using any compound the user needs to understand the steroid profile. The side effects, the length and of and how the ester works. Better yet understand how steroids work.
Sorry I will be nice (unlike me sometimes ) and just say you have posted completely wrong information. For you personally maybe you shouldn't for your personal reason never run Deca or use 19nors. H
However your statement is invalid as a general statement and Deca has show to be a tremendously good steroid for cycling BB's. It's attributes are wide. Good for bulking and one can cut while cycling on Deca. You need to know what dose for your purpose and what ester to use for the same. Keeping a close eye on E2 levels and Prolactin is a must and so also is the need of an AI to be used with a Prolactin inhibitor like Caber.
Please don't post invalid info to the newbies learning and getting them confused with your personal experience and a general rule.
Thank You