I think even if it is this roman salute,* it is just not acceptable or professional to do this, he is the CEO of several companies acting like a immature moron.
If one of his emplyees did this, and embarrassed the company they would probably be sacked.
Making a salute like either, may not actually be a sackable offense, what would be is bringing a company in to disrepute, either way there would be disciplinary action taken.
I would not expect the media to understand anything other than the fact it is a good thing what he has done, it generates clicks and income, that is all they care about.
Professional journaliam and investigative reporing died ages ago.