The only way that a release of any kind causes data loss is if you aren't doing proper backups before you do the upgrade. Sure the upgrade might corrupt and some of your onboard data gets jumbled up, but your backup exists to handle that by restoring your data -- thus no 'loss'.
And if you aren't doing backups that isn't Apple's fault.
As your attempt at being cute with that PowerPC comment, get over it. That is old architecture that is no longer supported. The issue isn't the OS, it's the companies that are too lazy to update their software. They have had warnings for years and mega warnings since the first Lion developer preview over a year ago. That they aren't going to bother with continuing to update their software isn't Apple's fault. So go gripe at the proper folks.
And if your customers are that bothered by those arrows being gone they can either start using Windows, stick with 10.6.8 and not have iCloud etc or simply get over it.