I mean it has a picture, bullet-point list and uses science to legitimise the practice. Does it get any more legit than that!?
My thoughts:
The aim of the practice seems to be to open "the third eye". It also seems to want you to move your awareness all over the place. A lot of "energetic work".
In some places it seems a bit too non-specific, may be because it isn't a starter/beginner practice, but then why use the kind of explanatory language that's used to begin with?
To me the document seems to be made by somebody who isn't an expert. Who has a basic understanding of the language used within daoist and yogic traditions and maybe the person even learned a practice much like the one described and are now sharing it.
My conclusion: If the main aim of the practice is to open the third eye, there's probably better and more stable, tried and true practices for that purpose out there.
As for whether it'll lead to qi deviation... no idea.... even legit tried and tested practices can lead to that.
Which is why people tend to recommend having a teacher.