O.k., I seared & found in the beginning of my OSM-mapping, the term "changes due to local knowledge" as a proposition in the OSM-help-section itself (!) = it is NOT "of my making", so I believe(d) it to be "correct" + sufficient, BUT: I can not re-find it at the present time as Link to that reference within OSM help section.

As for the "blocking" of mappers by DWC:
as I understand it in the following video-clip of an OSM DWC itself (!), it is currently becoming more & more of a PROBLEM, to find people that make entries into OSM ! I therefore believe, that rather than blocking "in the physical matter" "correctly" mapping people (as myself), that DWC will not block them (or me), "just" because the "change set comment" is NOT very detailed. This would be contra-productive to the interests of OSM DWC to have map data updated.

Sportive wishes,
jetdriver67