Because they do have a tendency to improve. Jerry Pournelle used to write regularly about his problems with ATI cards in his column on BYTE. They typically followed the same pattern: install new card; install drivers; see computer crash regularly; upgrade drivers; see computer crash less often; upgrade drivers again; see computer run more or less stably.
Then he'd upgrade to the next shiny ATI card and do it all over again, since the new drivers bore little resemblance to the old ones.
I doubt that the mailing list will show any definition of "trampoline". That word has a specific meaning in kernel programming, such that one would already have a good understanding of the subject before poking around in kernel code.
FWIW, "trampoline" refers to generated bits of code containing jumps to arbitrarily different pieces of code, something that ESR called "an incredibly hairy technique" in the Jargon File.
Encrypted communication on amateur radio bands is prohibited by law in the US, so transmitting an encrypted signal just invites spooks to triangulate your transmitter's position.
My son used to play a silly little match game that he picked up from pre-school when he was three years old. In it, he would take two toys -- cars, action figures, Lego blocks, staple removers, whatever -- hold them in his hands, and ask "Which one are you, X or Y?" After the other person (usually me) answered, he'd act out some sort of epic battle between the two toys in his hands, and then declare one or the other the victor. I always pointed out to him the pointlessness of the game. He didn't care.
Jeff Cogswell's reviews remind me of that game. They're pointless. He doesn't care. And my son grew out of it.