Please configure Incubator to make Sysops have the right to grant and remove this flag. (The discussion mentions bureaucrats, but all 'crats on Incubator are sysops by policy, so granting/removing this flag does not have to be put separately in the 'crat user rights.) For clarity: Sysops will continue to have the right "noratelimit" as part of the administrator toolkit.
I added it to the bureaucrat group instead given that all sysops are bureaucrats there, so it was just adding a line to the already existing code. Works for you? I have no problems on modifying the patch if you really want non-bureaucrat sysops to grant this. Regards.