Like has been said many times, I just want to reiterate.
This website is gifted with many very experienced and helpful people, but anyone that has been here for more than a few months understands just how quickly this particular forum is growing on a day to day basis.
There are numerous new people to the hobby coming every single day with, what may seem like, the simplest of questions. Like has already been said by JLC and Bruce, many of us here are really trying the K.I.S.S (keep it simple!) method when addressing issues with the new comers.
So I guess this is where I'm a little confused... everyone here has beaten the horse to death on the two questions you asked, and it fits into the KISS style of keeping it from being complicated to better help the new comers have the best start in their new hobby.
That's I guess where I'm confused by you continuing to pose the same questions or "but if"'s after so many people have given some very level headed input, as if you really DO want us to convince YOU.
Any advice I ever give is in the respect that I am assuming the person I am responding to knows very little besides that a snake has no legs. Keeping the info simple when it's a very widely tried and true method is in no way regurge, but credit to those that have taken our hobby a thousand times farther than it was 10 years ago.
There will always be people who sometimes over enthusiastically propogate one kind of way as the "RULES", but really, with the animals needs and requirements for thriving always in the forefront, you can't rightly go too wrong with trying new things.
As always, the key word is the animal's "needs". I feel that in respect to furthering what we know about these animals, every person should have a basic understanding and be able to read their animals to know when they are suffering, or simply surviving, VS thriving in our care.