Yeah, they're not "doing" anything to our 401(k)s. Allowing riskier funds to be added and reducing the liability for the people offering those funds is scummy but if someone can't be bothered to inform themselves my sympathy is limited. When you start a new plan you get about half a tree's worth of prospectuses, and they are also available online. If you can't be bothered to learn, just dump it into an index tracker or one of those age based ones that slowly transitions from stocks to bonds as you age. If you put a significant amount of money into some risky get-rich-quick scheme: I'm not going to say you deserve it, but I'm not interested in hearing you cry about it.
My plan added a lot of funds a couple years ago. When I was first informed about it I was very interested to see what would be available because up to that point it was very vanilla and some of it sounded like it might work for me. It took about 30 seconds to scan the fees on these new funds for me to laugh and know they were all crap. I still read the rest of it and even aside from the fees they were all junk at best and designed to create a bunch of bag-holders at worst. It's not forced and it's not hidden. Be informed and/or just keep it simple and this won't affect you.