I had the same experience. I find it hard to believe literally ever other patient was fine with signing sight-unseen. I don’t care if I’m being “difficult” signing without reading is not wise.
Usually if you're at a doctor, you're there for an illness or a health issue you want checked. I don't think most people make their way to the doctor's office, after taking PTO or an extended lunch to go there, to then decide not to finish signing in because they couldn't read the paperwork.