DSLR vs CamCorders for video tutorials?
DSLRs tend to have much larger image sensors than camcorders, which tends to mean much less depth of field (DOF) for a given field of view.  Shallow DOF is great for isolating subjects from their background, but it's a nightmare when you actually want the subject and its context to be in focus together.

Most DLSR lenses have a limited zoom ratio and/or limited maximum aperture compared with camcorder zooms.  A typical DSLR kit (EOS 80D with 18-135mm f3.5-f5.6 zoom), can be equated to a 35mm equivalent of 29-216mm f3.5-f5.6 zoom lens.  A Canon Vixia G40 camcorder has a 35mm equivalent of a 26.8 - 576 f1.8-f2.8 zoom lens.  That's more than 2x longer at the long end with 2 f-stops more light-gathering ability.

Combine longer range, wider aperture, and more depth of field, and you can see why news organizations tend to send camcorders into the field.

On the other hand, depending on your subject and your aesthetic, you may prefer the shallow DOF look, such as this short video demonstrates: https://vimeo.com/100437145