Not necessarily. The paper says that almost certainly less than 20% of stars have supermassive Jovians (> 4 Mj) in large orbital distances (20-100 AU).

Which is hardly surprising. In our Solar System, the existence of outer ice giants become problematic if we don't take migration into account. It is hard to see how a far more massive supergiant could form at these distances, except if it is a some sort of sub-brown dwarf instead.

So, no bad news except that it will take longer until new planets can be found using infrared imaging.

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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.
-- Richard Feynman