For what it's worth, I don't know any cable company that would EVER approve of that. That is absolutely ridiculous. I would've gotten fired if I left that. Wall plates were mandatory, silicone sealant on the bushing outside, drip loops, anchors every 18" on horizontal runs, 30" vertical, tuck it as close under an eve of the house or along the lines in the siding, etc. That is a lazy install to me when it would take an extra 5 minutes to do it right.