LEGO guage or "L" gauge is in fact a train system. Whether the model railroad global community accepts it or not does not matter. The different scales "Z" to "HO" to "O" to "S" to "TT" to "G" ect. is based on track dimensions. We have our own track dimensions!!
At the National Toy Trail Museum in Strasburg, Pennsylvania (United States) www.nttmuseum.org there is a display dedicated to LEGO TRAINS! Right along side Lionel, LGB, Marklin, and many others! As a TCA member (Toy Train Collector Association) I have been there many times and have had discussions with other members about our "L" gauge. The general perception is that it is wonderful to have/add NEW train enthusiasts to the hobby no matter what the scale or type.
I feel the same way! Eric and I plan on making "L" gauge a marquee train system that will be here for a long time.