I would respectfully:
Comment on #3 that BBQ Brethren member "Bigdog" was the one that gave a smoked sausage log it's now famous name. Early on they were made with breakfast sausage, but Italian does come in a log, so I'll call you "mostly right" on that statement.
Disagree with #4 in that mesquite is a requirement when cooking barbecue.
And very respectfully suggest that #5 (Pork Belly “burnt ends” were invented in Texas.) are fightin' words in some barbecuist circles. :biggrin1: I was born and raised in Texas and there were plenty of places in the 60's that made that claim, and still stand by it. Likewise they claimed they were born as scraps (not cubes of points) served as a lunch special, which I buy into a little easier.
So... respectfully, do some research starting with KC legends Harry Perry, Arthur Bryant and Gates Bar-B-Q and you will see what I mean about loyalty to the history of barbecue and to burnt ends aka "brownies".
When I was a little boy, BBQ joints served burnt ends that looked closer to this than the perfect, saucy cubes that are now so popular.... for what it's worth I like both dry and saucy burnt ends.