I am so glad you monitor my questions 😆 I asked respectfully and yes in the past ? was asked. I see repetitive questions constantly here about the most basic stupid crap imaginable. Your answer was the best explanation I heard. When you. Or someone quotes my answer to you I am sure it will be edited out of context. As it has many times. A salute to your rude post.🖕You've asked this every time it's come up and been told why every time it comes up, please stop asking, you're not gonna get a different answer.
External breathing is not necessary and won't make much difference on a stock or near stock engine, and it won't solve any breather issues. The engine doesn't "breath more" with a breather being external. The only thing an external breather does is keep hot, oily air out of the intake, which can mean a cleaner running engine, and not dirty up an air filter with oil, and allow for cooler air intake, which is better for worked engines since they already run hotter.
A stock engine that pukes oil through the breathers has a problem somehow like bad piston rings that lets too much air in the case, a clogged breather system, bad umbrella valves, etc.
Some worked engines will puke oil at highway speed simply because the breather systems weren't designed for the power of the engine. An engine that pukes oil in such a case will always puke oil regardless of external breather or not, it won't fix an oil puking scenario, but at least it will keep loads of oil out of the intake if it does puke. You might think they're a pain, but they're not, and putting one on doesn't cause oil to puke, not ever. Again, external breathers will not cause an engine to puke oil from the breather system.