Many Hallmark holiday movies are considered "bad" because they employ unrealistic, overdone, and exaggerated tropes, characters, plot devices, world-building, and sentimentality. This makes the settings in which they are set in seem like they are trying too hard to look believable. This makes the content fall flat and seem poorly executed. Characters are often underdeveloped as their personalities and histories are not explored much which makes it difficult to be invested in their story. These are just some reasons many consider Hallmark holiday movies to be less successful and impactful.
Explore some of the reasons. Discuss television vs streaming, secularism, commercializations of the holidays, budgets, appeal, genre limitations, reputation, etc.
To quote my mother, "I love watching Hallmark movies because I always know how what's going to happen. They're not stressful." While this may be a pro for my mother, and for many people who enjoy Hallmark movies, it's not considered a pro in the film world. A screenplay should always be surprising but inevitable. Hallmark movies follow a formula down to a tee. The plot points are inevitable, but not surprising. – Abby2 months ago
I would also go into the history of film and television production a bit. I think there's a clear parallel between the way Hallmark movies are viewed today and the way TV movies of the week were viewed by many in the 1970s and '80s — in that networks produced literally hundreds of them every year, and most were not taken too seriously by critics. No different really from the way B-movies were relegated to the bottom half of double bills in the 1930s. Hallmark movies are, in a way, the closest thing there is today to the old Hollywood studio system. – John Wilson3 weeks ago