Honestly, I'm having a little trouble trying to figure out whether the overly cautious language is from CNN or the "watchdog group" itself.
Here's the full section contemplating it:
According to federal regulations, government employees must not use public property “for other than authorized purposes,” with exceptions for “de minimis personal use,” such as sending a personal email from a government account.
Donald K. Sherman, the chief counsel for the watchdog group Citizens for Responsibility and Ethics in Washington, said Pinover’s posts appeared to violate rules prohibiting the use of government resources for private gain, and would not be considered “de minimis.”
The rules don’t “give cover to a federal employee using government resources to subsidize their private business,” Sherman said. “It is highly problematic that while dedicated civil servants who want to work for the government are being fired for all manner of dubious reasons, or are being forced out by this administration, that someone at the agency leading that attack on the civil service is using their government job for private gain.”
Sherman, the guy from the group, says the actions "appear" to violate the rules and that using a government job for private gain is "highly problematic", which is all really watered down language to describe using taxpayer-funded resources to help your side hustle. So, he's not helping by swinging and missing at the alarm bell.
Leave it to the cited federal regulation itself to unequivocally affirm that public property MUST NOT be used for private gain. That seems pretty clear to me.