Yes, and spam is also a huge concern.
I plan to mitigate by adding "Pull Request" style moderation next.
And you can switch to a private repo
For mass moderation, just git clone, grep the lines, sed them out, and `git push -f`
Remember the use case is for static generated personal blogs.
I'd argue it's even quicker than, say a paginated bloated megabytes javascript rendered single-page application moderation system.