The question, at least to me, is not about the meaning of what the document you cite says, but about the status of the document itself.
It is an unsigned undated document, and it is unclear which office within the USCIS produced it and when, and if the IOs adjudicating naturalization applications consider it binding.
Usually, when a policy issue is being clarified by USCIS itself, USCIS either issues a signed and dated policy memo, or amends the adjudicator's field manual or amends some of the relevant forms/publications/instructions.
None of these things happened here. There was no policy memo, no changes on the adjudicator's field manual and no changes in either the form N-400 or its instructions or in M-476. Question 4 on form N-445 (oath ceremony letter) still explicitly asks to list all traffic tickets received after the interview and before the oath date. The wording of the relevant question in N-400 still has not changed and is still phrased in unconditional terms "Have you ever been ... cited ... by any law enforcement officer ... for any reason?"
Also, here is an example of a thread from Sept 2009 where N-400 was denied on GMC grounds because of several traffic tickets, none of which appear to have had fines over $500 or resulted in an arrest and none were DUI related:
http://www.immigration-information....plication-denied-due-to-traffic-tickets-9186/
People are of course entitled to make up their own minds, but to me at least, the traffic ticket issue still does not appear to be clear-cut for the moment.