That's about the number running through my osmcha feed, too. Most is StreetComplete though 😄
I write some comments when I review and I really try to reach people that do not react to CS commets because I have met several that did not see the notification mails. So I write a DM then.
And only after that I go and bother the DWG with my troubles. 

Yes, the CS comment system is broken. There are discussions about that about every three month in the eglish speaking telegram group and it's been a rather long thread on the forum.