My organization has always held back new MacOS releases until the IT team completes internal testing and validation. This is pretty typical and enterprises should be used to this.
Bugs aside, new releases may have behavioral changes and that’s true of any OS.
People paid good money for this software, they shouldn’t have to get used to this.
Smart IT departments do this with Windows upgrades too. Even though Microsoft is usually very good about backwards compatibility, it’s always smart to test these things before you upgrade 500 computers.