Inexperienced and unimaginative presenters stand next to this slide and read the text. They may or may not have taken the gum out of their mouths first. The audience goes cross-eyed. Then they start yawning. As a student, your learning curve flattens or dips.
Web pages are better for detailed graphics and for text.
Also Web pages can be interactive by including forms, for example. It's better to keep quiet and endure. At an early age, we learn to feign interest in such situations. It's called politeness. Our minds may be miles away.