As per that very kb you mentioned:
"Internet connectivity and valid My VMware (my.vmware.com) credentials are required to download and provide build recommendations."
"The following issues might be detected by this check.
Internet access is unavailable.
Check and restore Internet connectivity to ensure that release metadata and VMware compatibility information can be updated correctly."
It is expected for this check to be yellow if you do not have internet connectivity from the cluster thus you have the choice of living with it being yellow or disabling it - considering spoofing an expected alert to not function doesn't really make much sense.