There's truth in both statements. Let's be honest, executives are getting younger, often lack a creative background, and are asked to read more. The result is they read less. It's that recommendation that places your script in the running for a deal. And don't be afraid to write brief description.
Film is still a primarily visual medium.
Try to keep your screenplay within 110 pages, about 100 pages for a comedy and 105 for a drama. Paragraphs of narrative description should not exceed four lines. As a general rule, each paragraph should focus on an image, action, or story beat. Thus, paragraphs will often be only a line or two in length. Ideally, dialogue should consist of one or two lines, maybe three.