"Platforms like this are used in the US for huge Dobsonian telescopes of 24 inches aperture and more.
It really is TOTALLY SAFE because :
The overall North/South tilt of the platform when set up anywhere from 470 North to 570 North is only a maximum of 5 degrees from level.
The overall movement of the platform table , is the East/West tilting motion as the platform tracks during one hour involves only a maximum of +/- 8 degrees from the mid-way horizontal & level position at each end of the tracking arc.
SO PLEASE IGNORE rubbish comments like "But it can't work, I mean, how can you balance a scope on a board tilted at 470 from horizontal ? ? "
These remarks just show the "knowledgeable person" ( we are too polite to say ill-informed, and opinionated idiot ) has not bothered to take the time to understand the theory of how a platform works !"