My poor engine has had a hard life, and it does use some oil, but I would suggest only a small amount ends up out of the exhaust, most goes into the catch tanks.
on the road very little maybe 50ml/1000miles on track though maybe 100ml per trackday, as i say though my car has had a hard life 20k miles at 300hp and probably 7k miles of that on track
if that amount of oil is going via the breathers your inter cooler pipes and the inter cooler will be coated in oil.
Not just the normal amount that we all get without catch tanks but I would say dripping with oil.
Very easy to check…just remove on of the pipes as an initial check. Expect a coating of oil but no more than that.