This ad might be targeted to newbies as those who are more experienced would not be "attracted" by the ad.
Can't say the ad is totally wrong, especially for the less experienced. Imagine if there is this special moment that will only last a few seconds and you aren't sure the settings I think one safe way is to use auto mode (or P mode). At least you will get a decent image (may not be at optimal setting) better than miss it due to using wrong settings.
Just my thoughts haha.