a bunch of stuff
You just copied and pasted the original post, replacing "Legacy" with "this thread." Do you think we're dumb?
I think this reply speaks for itself kind of wonderfully. And I agree with the actual point Gunslinga was making entirely.
As to the topic of the thread: Legacy has a net-positive impact on Vintage. People buy FoWs, fetches, and duals, and therefore have a solid base to build proxy 13 Vintage lists, as well as an interest in playing more powerful cards.