BaBene,
Thanks for your well thought out post. I'll let Tom answer his side to this, but I'll also remind you that after sales support is every bit a factor in this. Linux does not behave as "easy" as mass consumer operating systems, and it's made even more rough by the multitude of flavors. The simple answer to that is to say we only support one flavor, but even then there's the staff support training costs and upkeep of the plugin development (which believe it or not is not as simple as drop and compile and up to this point has required quite a bit of work to achieve almost the same Windows and Mac functionality). It all ultimately comes down to economics, and that's something we'll continue to pay attention to in the years going forward.
As for these wannabe Linux users? There must be a lot of them in the X-Plane world. Most of them are quite demanding and even vengeful in other public venues. I'm sure there's plenty of good folk, but when the only ones who want to speak up are these so called "wannabe's" it doesn't put a good taste in our mouth.