Isn't the Creeperhost thing connected to the 'server' button (looks a little like a creeper?
Here's a shot of the Beyond menu that shows it.
In FTB Continuum, there's a Creeperhost Server button on the main menu, but when I click it I don't get asked whether I want to opt-in or opt-out of data collection. All it does is ask me what I want to call my new Creeperhost Server.
"Order CreeperHost Server
Step 1 of 5
General Server Info"
And then it asks for server name with a checkbox to agree to Mojang's EULA (whatever that means, why would Mojang now be involved in the transaction too?) Where's the CreeperHost EULA? No mention of that, although it may come on page 2 of 5 or later. I've never run my own server so I wouldn't know.
I'm sure that somewhere in the FTB dowload terms of service fine print, there's probably language that alerts us to the fact we are "opting in" to certain "features" such as Creeperhost data-collecting off of our computers each time we play the modpack...
...but it still seems kinda underhanded to me, kind of shady. Nothing in the Creeperhost privacy page really worries me, but still... my ultimate point is that I never KNOWINGLY ever accepted any terms of service agreement from CreeperHost and that's the underhanded/shady part of it all. They KNOW full well if they made us all "opt-in", few of us would... and there goes their revenue stream or whatever they're doing with our data.
In the corporate world, in my view, nobody is "innocent until proven guilty", but rather, it's the complete reverse - corporations with their grubby profit schemes are "guilty until proven innocent". If they don't like it, tough. Keep your paws off MY data, and keep your spy mods out of FTB's modpacks.
I declined the terms of server once I was able to discover that there is such a thing for CreeperHost in the modpack, but we'll see if the same thing happens with other modpacks when I install them.