Noted, Don, that you didn't support your position.
I can find articles discussing dendrite formation under high charging, but all of those also are focused on charging to full. And cell size isn't pack size. And discharge temperature isn't charging temperature. They all matter and they all lead to degradation.
The danger from dc charging is going to be more leaving the pack in an extreme soc position more than the charging itself.
If you're not charging at top twenty percent or leaving it sitting at that bottom, then no, there's no evidence the higher charging does more damage than riding on the freeway. There is some lab evidence that babying a pack can double its life... But no such evidence in a practical setting. Just because we know that hitting the track all the time can reduce battery life does not mean avoiding dc charging will further increase the lifetime of the pack.
So warning people away from it is needless. Unless they're speed junkies.
-Crissa