Same crappy shut-offs on high end homes in NC. Builders don’t like to be told by their clients which products to use. Contractors bid on new construction based on a number of things but they sure as heck don’t get down to the nitty-gritty such as make and model of toilet shut-offs. At the build stage, the builder or plumber don’t give a hoot about anything but getting the job completed. Even those crappy shut offs are easy to install, and will pass operating tests and inspection. Doesn’t make them worth a darn long term.
It’s eventually up to the homeowner to deal with.
In home inspections it should be noted that probably 95% of all problems are related to water. That can be moisture as well as plumbing issues, and bad design of things like gutters, building/roof penetrations. Probably 95% of THOSE problems are caused by lack of maintenance of some kind, or just not following through on doing a complete job. I inspected a 12-unit apartment complex on Sunday and not one foundation penetration was properly sealed! Not one! That’s HVAC, plumbers, electricians, irrigation, cable TV, Dish, Internet and telephone contractors.
Shoddy work by everyone. It’s no wonder why the crawl spaces are dank festering swamps!