Also, maybe I haven't been an Enterprise Fizzbuzz Java Developer for 6 years, but I've been keeping busy by having personal projects that most enterprise developers would probably not be able to understand.
I think that was understood (at least, that's how I read it). In a good environment at any company, your ideas will be fairly weighed against other options. Most environments aren't "good", by that definition. Don't be surprised if ideas that don't support the status quo are thrown aside.
> I'm sorry you think it is funny that I actually want to participate in the development process.
They weren't making fun of you because you'd like to take part in the process. They were making fun of you because you think it would be that simple.
> I've been keeping busy by having personal projects that most enterprise developers would probably not be able to understand.
Condescending statements like this make me glad not to know you. I've done things that some of my coworkers don't understand, and they've sometimes done things that I never have. Personal projects are fine, but there's a difference between the short+sharp bits of brilliance that you might put in a personal project of a few thousand lines and introducing a major feature into a project that has a whole file for every line that your personal project has.
> When did I ever presume it would be simple?
Your tone implies a process like this: 1. Get a job at Amazon 2. Never be bored, and have a good chance for input.
You may be lucky and have an experience like that, but the general consensus seems to be that it isn't the most likely outcome. #1 is the easy part. The parts of #2 will be false to varying degrees, separately and together, as time goes on (every job has boring parts, for example).
And anyhow, you wrote a post that was easy to make fun of, with the tempting mix of inexperience and confidence. You can't set yourself up for ridicule and expect that no one will take you up on the offer.