You guys not only are confusing first time stick shift drivers but also make it sound more complicated than it actually is. You are not driving a 1949 Willy's Jeep and the transmission isn't as fragile as you make it sound. I have driven anything from a 3 speed column shifter to a 6 speed Zo6 and some of the cars I have owned over 178,000 miles and never replaced the tranny or the clutch and not once I rev matched or doubleclutched any of them.
Rev matching may be a great thing but it's not the end of all shifting techniques. If you like doing it than please continue to do so but don't tell people they have to or their tranny is going to explode
Use common sense people and you will be fine. Don't overthink driving a stick. It will come to you.