I think some people post fake decks or fake cards because they ultimatevily don’t want to show off their secret tech cards which separated them from the mass players.
This is bad logic. Knowledge is something to share not to hide. And forums are all about helping other people. Not to mention how fast decks get outdated.
Did elementsabers or shiranui ever got outdated? They have been around for 1 year. I know very well about people even in this forum who post fake decks. This is sad but true.