What these channels like Primitive Technology's and his copycats don't tell you - or rather their videos don't give back that type of experience - is that all the stuff they make are a result of awfully lot of work.
Judging by a 10-20 min video one could think: "oh that's so easy, I'm gonna gave fun on the weekend recreate their projects" or worse: "I'll quit my job and live on my DIY, off the grid homestead built from scratch by the materials I find in nature" and off he goes. Then comes the frustration of the slowness of the work and the back pain from the crouching and lifting for hours and hours days after days.
Making over 9000 mudbricks to build a deplorable little cabin is no fun for 99.9% of the romantic minded delicate city dwellers.