Caporegime
Having something shallow fry in it's own fat/juice vs the fat ignite and char the food makes a huge difference. Then there's the extra mess, smell, smaller cooking area.
There is no shallow fry, that's why I said griddle (like 3 times), not pan. The ridges ensure the fat is not frying the meat.
As for smaller cooking area, get a bigger griddle ? and you can only cook so much, i don't have dinner parties every day.
In terms of cleaning, same thing as cleaning any other cast iron pan.
It sure is easier than buying an entirely new outdoor bbq surely if you are looking to be lazy about cleaning?