That is my opinion about it, if you have a structure that proves that your
offshore company is not operated from Malta and that it has no commercial link with Malta and that it does not remit its
dividends in Maltese territory, it's that easy to pay only 5k on a personal basis, whatever your foreign income/dividends is. And all legally.
That is the great advantage of Malta's tax system. Maybe that changes later, but at the moment this is the case in 2019 and confirmed by lawyers recognized in Malta.
To deceive that his company operates outside Malta, when it is not, is another debate. The best is that you can do is contact specialists to have the proper structure and what to do or not to ensure that your company is not considered operating in Malta.