They pushed Ozone/UV 15 years ago. It is high return item.Yep, definitely stay away from any PB that is making you sign a waiver. There are plenty of builders, you don't need to restrict yourself.
We're in norht Texas and most of the builders repeated the same lines about salt pools -- corrosion, stone issues blah blah. However, only 1-2 said they wouldn't install or would require a waiver. A vast majority said they'll install whatever we want and there are definitely pros/cons to salt. The new "trend" seems to be UV/Ozone, it's what they push incessently. It must be so common with our builder that the office ordered the UV/Ozone units as part of standard practice and the plumbers installed that + the salt. Luckily, I only paid for the salt, so I guess the UV is a bonus.