Here's why:

* Modern TVs use different technology: Most modern TVs use LCD or OLED technology, which rely on liquid crystals or organic light-emitting diodes to create the image. These technologies are not based on magnetism.

* Older TVs used CRTs: Older TVs used cathode ray tubes (CRTs), which did rely on magnetism to create the picture. The electron beam that created the image was deflected by magnetic fields. However, even in those TVs, the magnets themselves didn't create the picture; they were used to direct the electron beam.

In summary: While magnets were crucial in older CRT televisions, modern televisions don't use magnets to create images.