Maybe many beginners might be jumping to videos. I'd like to think that most of the experienced developers like text more as they can quickly scroll past the bits that are irrelevant to them and look for the parts that are interesting. It is harder to do so for a video as you typically have no idea at which point the person will tell you about the concept you were looking for (unless you get some timestamp list but even then you may need to wade through some fluff/water before you get to the juicy bits).