Most of us don't come to steam or model engineering because it's easy. Often it's to the contrary, the challenge is what stands it apart from say basketweaving (cue indignant howls from the basket weavers.) What's at work with Mssr. Green is doing whatever he can, no matter how ill-advised, to make his product more attractive by making it less difficult to use.
I have seen this before. A few years ago I had a running battle of words with an otherwise good fellow on the west coast who had developed a design for a small scale live steam locomotive which anyone could build using a hand drill and commercially available parts. The project was designed to attract newcomers (of which there are many) and new builders to small scale live steam - an admirable objective - and in this it was successful. The problem was that in order to make the project as easy and inexpensive, and therefore as attractive as possible, he mitigated the job that most builders find to be most difficult, silver soldering the boiler, by broadly advocating that soft solder was plenty sufficient for model boilers and trotted out specs and numbers to prove his point. As the then most experienced boiler builder in that community I was compelled to speak equally broadly against this practice and in doing so I appeared to many to be a spoil-sport (killjoy, elitist, etc) but to me to advocate to raw beginners that any practice is OK as long as it makes the job easier and cheaper at the expense of safety was just plain wrong. OK, on this one isolated, very small very low pressure, instance maaaaaybe one could get away with using soft solder, BUT that would be it, anything else more complex or higher pressure would present an entirely different landscape. Why not equip yourself and do the job right from the beginning? Some folks did just that and in the end the bru-ha-ha settled down and most people in the small scale community came to realize and accept that silver soldering of boilers was a requisite.
