If you show no results then you try harder until you do get results. Nobody grows a six packs in a day you know and the same training discipline applies here. The truth is you won't be able to understand the energy dynamics in a video unless you have experimented with the spiritual energy yourself, so the legit videos become indistinguishable from the fakes. Science in it's current state runs through capitalist institutions which is unscientific by itself. Funding for research only goes to the studies that garners the most profit or has the highest chance of repeatability so uncertain topics like this are given no priority what so ever. This means many truths are simply ignored because they can be hard to understand or control and only easy to reach studies are done.

There is a very hit or miss mechanic with telekinesis and things won't always go the way you want, but those hits are remarkable none the less. Magic is just yet to be understood science and society always has a habit of being biased towards new technology calling it impossible magic every step of the way. With telekinesis you need to develop a deep spiritual connection with the higher forces but science doesn't care unless you can put it in a bottle which you can then give to soldiers so the cause is lost from the very beginning.

There are so many factors that are needed to be understood when trying to introduce this to other people and the practitioners have to figure all of it out on their own without any scientific funding from any direction. So it remains a secret occult practice because in a lot of cases you can end up damaging yourself if you are not careful with this energy.