The fact that the suspension happened is true.
But the fact of the suspension of a trainer or a rider in these cases, under the rule of strict liabiity, tells you nothing about who actually did the bad act.
In some cases the absolute truth of the matter may be that the rider or trainer charged is the evil doer (whether or not there is evidence to prove it). And in other cases, the rider or trainer may be completely innocent of doing the evil deed but is still “responsible” under the rule of strict liability.
This kind of rule is used in other contexts, too, such as hazardous wastes. The harm is considered so great that a landowner is liable even if the current landowner had nothing to do with the depositing of the wastes.
It’s an allocation of liability based on the seriousness of the harm and not based on the culpability of the person designated as “responsible.”