By doing all of these changes, Disney is definitely making this less "security theater" and more actual security.
With that said, there is one major hole in this change: The STILL aren't don't have security checking CMs as they come into work. Both Universal and SW/BGT has backstage security (at the very least minimal security, in some cases metal detectors). Disney has literally nothing besides a security guard scanning to make sure that your Cast ID is active.
Disney is the biggest threat to themselves in this situation.