As a courtesy to the entrant and everybody else, I would encourage the inspectors to do the best they can to conduct a "Class Legal" review in the beginning also.
It is also the responsibility of the officials to police that legality throughout the event.
Does anybody wonder why the class designation is required to be on the vehicle ?
In this case, it is likely the mistake began with another entrant and they brought to the attention of an inspector that furthered the error.
The first thing when writing, enforcing, or reading a rule is to understand the intent and only then can you be expected to apply it correctly and universally.
If a person reads it another way, the intent should should be explained, and if in conflict with the valid intention it should be acted upon asap.
If the the reading is unclear, a pre-scheduled common interest meeting would serve to open the discussion and possibly generate a simpler, and better way to say it.
Without that kind of open communication , the group will suffer at the hands of individuals that go unchallenged.
Everybody has an example of how the rules have evolved into the mess they are today and if it is allowed to continue, the whole thing will continue to lose credibility and fail.
Bigger is not a measure of better, there are many examples of that.
The World is watching and not enough are crying, but many are laughing.
That applies to LSR in general, no matter how you spell it.
If that is what you want, then there you are.