Scream 6 directly referenced Stu Macher. At the Ghostface shrine warehouse, the Core Four and others came face-to-face with key items from past killings, including the TV that supposedly killed Stu.
In a call with Gale, Ghostface opines that Gale being the killer ... given their masks are used at various points, but the shrine takes things a step further by offering an Easter egg gold mine.