This kind of invasiveness is standard for good anti-cheat protection. The fine stems entirely from stealth bitcoin mining.
The anti-cheat stuff runs as part of the OS, so the company can do pretty much anything they feel like. I'd assume they only bother with screenshots on suspected cheaters, while they're playing. Otherwise it's a waste of effort on their part. But if you don't trust them to handle screenshots possibly containing snippets of IM, then you shouldn't be running their binaries as root.
What OS are you running? If you trust your OS vendor enough to run their binaries as root then you shouldn't be too worried when they screenshot your machine every minute and post the images online so your family can see the kind of porn you watch...