I've read it and mostly agree. The article even talks about the "solution" I mentioned (they call it cold plate). Stealth in space is impossible if you use cons

I've read it and mostly agree. The article even talks about the "solution" I mentioned (they call it cold plate). Stealth in space is impossible if you use constraints they used (solar system coverage with sensors and need to hide a ship with life support). What I've talked more is about a missile. Missile can fly "cold", it could even be multistage so that after it's acceleration burn it can drop of a hot lower stage and continue to the target completely cold. If you add a cold plate and "terrain masking" you could effectively use a missile stealthily. Ofcourse if there is a full system sensor coverage this is not possible, but I've said that in my initial comment as well. You may be able to hide the heat from your target, but not from everyone.