Plumbing estimates? Maybe talk to Bill about that. I didn't put anything in there but there are Ad apps that plug in spam based on language in a post. It may be your browser.
As for the pipe question, I was always curious why we don't prime the pipe? It really makes the joint pretty much as strong as the pipe itself. I do understand nobody wants to use purple primer but they do make clear.
I do understand the idea that maybe we want the joint to be the weakest link but that is saying we want exposed conductors in the winter doesn't it? (water fills the pipe when the snow melts etc)
Don't we inspect for expansion joints or the proper use of bends in the pipe to account for this?
That is why the straps are pretty loose, so the pipe can move. I was also taught not to strap too close to a bend, so that can take up the expansion and contraction. Maybe I am just old and cranky