That toilet brush doesn't convince me at all... the handle could still be in contact with dirty water, and could spill them around while you put it back, so the same as the normal stuff... also where there are mechanism, there is less cleaning... and also water by itself doesn't clean "bacteria" from the brush... if a child play with a normal brush, it could still play with the handle of that new thing (and no, it is not clean)...
Everything they say seems to me just a total contradiction...
With a normal brush, if you shake it into the water to take away the dirt, shake it again outside the water (but still into the toilet) to dry it, and then put it back in its container filled with alcool, the only issues could still derive by children... but no one can stop them !