It's not a good look for Apple, and it's not great that the permission revocation basically doesn't actually work, but any malware that could have infected the system due to this issue would have also been able to infect the system while the permission was still (intentionally) enabled.
There are many apps that themselves are not malicious but they run untrusted code via plugins and stuff. Like VS Code for example.
So you gave it a permission and then revoked it thinking all is fine. tomorrow an extension was hijacked and it now reads your files. cool?
But since they don't consider these as vulnerabilities in the first place, then yeah, sure.
whether it is a vuln is different argument (it's sandbox escape and definitely usable as part of an exploit)