@nprofile1q... it’s a tool to sync files between computers
https://en.wikipedia.org/wiki/Rsync whether any given piece of software is “safe to use” doesn’t have a simple yes / no answer as it’s a set of trade-offs specific to each context. in this instance, the trade-off is between updating to a version which has some fixes for security issues but inadvertently reintroduced some old bugs vs staying on an older version without those reintroduced old bugs but doesn’t have the new security fixes
if you’re not the person responsible for managing software deployment to fleets of Linux / *BSD / macOS computers then it’s probably best to let your personal device(s) continue to apply any security updates as normal