Dawntrail is supported on the PS4 and the Dawntrail license is under a dual PS4|PS5 heading. And it has been announced during live letter that PS4 would be supported throughout Dawntrail's life cycle.

The PS4 is just a convenient scapegoat. If you hadn't that, there'd be the Xbox S at least. And given the fix for a Steamdeck exclusive issue earlier this year, the devs also appear to take that console into account to a certain degree.