May folks mistakenly use a TV as a broadcast monitor. A real broadcast monitor shows the raw image. All TVs, without exception, use some type of automatic filtering and adjustment to make the image look best on that manufacture’s hardware. Go into any big box store that has a wall of TVs running. Notice the wide variation in coloring on each screen.
You can use a TV, you can make your images look great, but it’s no better than a computer monitor. Other TVs may show the image with altered grading results. But alas, lots of folks do it.