That's an excellent video, and an excellent channel overall, I love his stuff. One thing that is left out of the video (and maybe isn't as useful as I think it is, I guess) is how much damage the anchors do when nothing goes wrong. Assuming you use them for a while, then need to remove them and patch up the result, what are you in for? Some of them come out clean with a small hole, some are going to leave parts in the wall forever, and I imagine mollies might actually do a fair amount of damage to get them out.

Drywall anchors that cannot be easily removed, you should push through the drywall, not try to remove them. As a homeowner, it’s also worth learning basic drywall repair skills. You can buy 2’ x 2’ pieces of drywall and remove and replace a section between studs pretty easily. Learning to tape and mud properly so that it doesn’t show after painting is the hardest part and takes some practice.

The best wall anchor review I've seen.