If your idea is so easy to steal, copy, reproduce that there mere act of telling someone about it is a threat, then 1) Your idea (like all ideas) has minim

If your idea is so easy to steal, copy, reproduce that there mere act of telling someone about it is a threat, then 1) Your idea (like all ideas) has minimal value. 2) Someone else probably has/is/will come up with it independently. 3) When you do reveal/launch it and it's worth anything someone with more money/laywers/customers/clout/power/marketing than you will take it anyway. Ideas are nothing. Implementations of ideas maybe something. Good/successful implementations are hard to reproduce/steal. The article points are about helping you achieve that good implementation. Something which secrecy hinders. Also note, that currently for most the world, people with money/power can generally make ideas not worth stealing via various patent/copyright laws and the general high cost of litigation.