Well, they used to be selectively-bred, but these days they just genetically-engineer new flavors. That's how you get otherwise-impossible hybrids like these:

This piece by Ellaguro feels more relevant to where indie tabletop has also wound up than I'd really like. The analogies are imperfect (video and tabletop gaming are very different media; the equivalent of FTP and UGC platforms is tricky to nail down) but the dynamics are pretty visible over time.

"Hello, fellow anarchists"

I've now done that. You and I appear to mean vastly different things by "concrete and specific." Alluding to third parties you don't name and stuff that happened on "the Treehouse" (a web search gives me nothing to go on here) is not providing receipts. Which, you even claim to have: