Technically it wont create trouble, that's why SAP allows to change the message attribute.But it may confuse some users, you may even get tickets to analyze why the release date is determined wrong compared to the example that can be found in help.sap.com (or from the long text of this ME546 message) and then you may search for many hours or even days until you find out that this date was overwritten manually from a user.
Wouldn't it make more sense to fix the parameters in the master data once instead of changing the release date every time?