There are many reasons to reject the use of that RPG consent form that's been talked about a lot on social media.
But there's one reason that I haven't heard discussed yet...
How many gamers will either consciously or unconsciously fill in yellow and red boxes because they don't want others to assume they're cynical, jaded, immoral edgelords?
With forms in general, there's an expectation. Remembering all the many forms I've filled out in my life, have I ever checked only one box / answer for every question asked? No, probably not.
There's an unspoken assumption that one has peculiarities and depth. One is not a machine. In fact, just to relieve the monotony, I would probably check a few non-green boxes... even though I'm perfectly fine running across any subject matter the GM describes.
When expectations influence honest answers, then forms become a sham.
If you're truly worried about going too far in your GMing, simply ask (this, too, can be a written form handed out before play begins)... "Is there any subject matter that is off limits to you?"
Nine times out of ten, you'll get a negative response. But that one time will get you an accurate idea of what is too far for that particular player.
I remember years ago asking players before an upcoming campaign the following two questions..
1. What do you want in this campaign?
2. What don't you want in this campaign?
Not everyone answered the questions, which was fine. But for those who did, I got an idea for their expectations. No one ever mentioned rape, genocide, or gaslighting. However, I did get "rules lawyering" and such.
Hope your games go well!
VS
p.s. Cha'alt hardcovers will be coming mid-October. Will make an announcement when they arrive. Until then, reviews keep pouring in regarding the PDF.
