I've personally put together a couple of samplers, using bits of several different patterns. But I usually end up giving them away after framing them - I think I only have one at home right now.
I agree with her to some extent, that it can be 'mindless' work. I tend to listen to audiobooks while stitching.
On nearly every wall in JoAnn Myers' home hangs at least one sampler featuring the alphabet, animals, flowers and decorative borders.
Myers created most of the samplers, often using a magnifying glass to make the tiny and intricate cross-stitches, French knots and double running stitches.
http://cjonline.com/news/2012-02-25/topekan-stitches-intricate-samplers

What is the point of rules that are not enforced?