Note: story is from 2016. It's been three years, so it's unclear how relevant this story is to the current status of ContentID, copyright identification, and monetization on YouTube.
I regularly follow the relevant creator, he definitely still does this and still occasionally talks about it. From the handful of YouTube creators I follow it seems like the problem has only become worse in intervening years.
If you email the mods using the footer Contact link, they’ll append (2016) to it.
I'm surprised YouTube hasn't killed his account. That would seem to be the obvious next step.