To discuss both sides in a civilized way, I would just like to point out this was done with no harmful intentions. Using Minecraft was a good way to spread awareness about the issue similar to how many used social media (and still do) to do so. I agree that they should have mentioned the config more explicitly perhaps, but to be fair, he did state it in the changelogs and the first thing you should do when questioning new features is head towards there. As for your channel, you could have just solemnly let the message play to pay your respects and just disabled it afterward if you found it to be too annoying. Condemning a mod author trying to spread awareness of a social issue people need to be aware of is simply not right.
The mod has been up for a month, but many people have been actively asking suggestions and i've been busy implementing them. I was wondering if there was anything you fellow authors would want to improve, not just texture or model wise but actually game mechanic wise since you, too, have an idea of how to mod.