The exact opposite is more likely true, depending on the nature of the change. A new utility has no current usage so there are no in-the-wild backwards compatibility concerns. The system python on redhat based distros was stuck at 2 for a long time because some of the sysadmin utilities relied on it and all those deps needs to be vetted or converted to either a newer python version or their own shipped version of the runtime that didn't use the general purpose python install.