On a Windows system (checked with 7 and 10 - 64 bit), install latest version, say 8u121 (32-bit).

The installation (8u101) is allowed to proceed without any warning/information message about the presence of latest secure version.
The concern here is that
- The users are not made aware of risk of keeping/installing an older unsecured version.
Therefore, to ensure that users always have only latest and secure version installed on their system, it's important to guide them about the risk of attempting to install unsecured version.