No offense taken. I would have thought 'non dominance' was more common, but maybe just because that's how I'm afflicted. Is switching shoulders really that easy? I've shot off shoulder before, and the awkwardness that goes with it is really overwhelming. Maybe like anything else, it just takes a few sessions.
My experience with most shooters these days using tape is to solve a non-dominance or equally dominant issue.
Todd says himself he puts a lot of tape on a lot of glasses and the he very very rarely changes shoulders.
Unless the shooter is brand new to shooting and has no real disposition to either right or left and a truly and firmly cross dominance, changing shoulders isn't a viable solution 99 times in 100.
If you've been shooting a while and you're right handed and left eye dominant it WILL be WAY MORE DIFFICULT to change shoulders than put a piece of scotch tape on your glasses.
Plus there are a lot of advantages to being right handed, which the majority of shooters are, stocks are typically cast a little for a right hander, clothing and shooting gear is easier to find in right hand versions, most coaches are right handed and come to it from that frame of mind.
How often have you heard setup this way look here do this and that, and then the coaches turns and say "oh if you are left handed just do the opposite..."
Tape is King! I see more people now using tape than ever before and many of them very good shooters who have been shooting for a long time.