There are very few people who have done more than one Christmas album.

Taken at face value, Hanson is making an industry observation: Christmas albums are common as one-off projects, but comparatively rare as repeat undertakings. The remark implies that holiday records can be commercially tempting yet creatively constraining—seasonal material, audience expectations, and the risk of seeming repetitive may discourage artists from returning to the format. It also gestures toward the idea that a successful Christmas album can become a definitive “holiday statement,” leaving little incentive to produce a second. In short, the quote frames multiple Christmas albums as an unusual marker of either sustained demand or unusual commitment to the genre.