The extension restricts the number of messages that can be processed with a command. The security considerations section notes that new bugs could potentially be introduced, and that quality assurance testing will be used to mitigate that possibility.

Restrictions or setting limits typically helps to prevent security problems such as buffer overruns, so the extension could be helpful from a security persective preventing DoS attacks or other exploits of the server or server resources.

If the team would like to add something to that effect into the security considerations, it is reasonable.