That passage just refers to a well-known truck cheating incident (iirc a few US companies were caught doing this at one time too) -- it certainly does not imply that such cheating is an accepted practice at time of writing. It just makes a point that a better-designed test would be trickier to cheat in that way, in addition to being more representative of driving conditions.

No, but it is a published document that likely figures as required reading in the offices of those that are tasked with ensuring that such tricks don't pass out the manufacturing door given the possible penalties. In other words: actively look for defeat devices in software (that's real work but it is doable) and get the engineers involved to state very explicitly that no such devices have been implemented.