Probably about 50/50, but a lot of the meals we have with meat don't have much in, but obviously are not vegetarian.
For us, it's mainly that the food I naturally like is either vegetarian, or doesn't have a lot of meat in it. I'd probably never choose to eat steak and chips or pork chop, mash and veg for example.
So we have things like chicken biriyani, where there's 3 chicken thighs in 4 portions of biriyani, plus I'll make a dhal and a vegetable curry and that's all the food for 2/3 days - there's 2 of us and I tend to cook a couple of times a week and then eat the leftovers for 2/3 days.
Or a pasta bake that's macaroni cheese with cauliflower and/or broccoli that might have one of those small packs of bacon cubes in, so maybe 100 g of meat in 4 portions of food, just for flavour. Or I won't bother and leave it out.
Chilli would have maybe 300 g of mince and then 2 or 3 tins of beans, peppers, onions, tomatoes etc and then there's quite a few portions and some goes in the freezer.
If we get pizza, I never have meat on it.
Just another way of reducing your meat consumption if you're not vegetarian and might be a good compromise if you're feeding people who insist on meat, but you don't want to be a 'lot of meat every day' household.