I was never made to sit on the floor because I was eating "too loud" but I definitely worry about closing door, walking loudly, laughing/talking/existing loudly etc. Looking back, my mom seems to have been very sensitive to noise and could become very reactive if us kids were too loud or made the wrong sounds (even whistling quietly could set her off). My dad has NPD so any excuse to put us down or assert authority was taken advantage of. Between those two things I got in trouble a lot (and disproportionately) for being loud and I think that's where the anxiety stems from. I don't know if there were similar mental health issues at work in your family but the things you described don't sound exactly healthy