The problem with Apple's ancient userspace is so many of the utilities are outdated and don't support things like files bigger than 4GB. So switching to a tool updated in the last 19 years may be an improvement. But then rsync is such a standard, is openrsync 100% compatible?
The need to install and maintain Homebrew was a big part of why I switched from MacOS to Windows. WSL is a very good Unix environment, being just Ubuntu or Debian.