Please note that in your linked article, the very end states:
"Last week, YouTube removed the claim from the flagger who said TheFatRat was using copyrighted material, and less than a day after Johnson filed a dispute on his video, the flagger released that claim. That means both YouTubers shouldn’t have to worry anymore about those specific videos.
Neither TheFatRat nor Johnson returned emails from the Daily Dot to see if they were satisfied with the outcome."
This implies that the content creators resolved their problems before getting traction on the published article. However, I will grant you the obvious point here that these content creators that were able to resolve their problems have a huge following, compared to the majority of content creators that don't have the same voice, so maybe this isn't the same for everyone. derefr who also commented below says that it should be the same for anyone who receives a DMCA takedown notice.