Mete, 1911 extractor, due to tilting breech end, is more like 2:30 and ejector (standard type) about 7:30 where the case makes contact with the vee.
Lowered-port 1911s have the TOP of the ejector extended, raising the contact point with the case, resulting in a more horizontal ejection; but it's still below 9:00.
An advantage to the original-style port is a higher slide wall resulting in a stronger slide. Older Hi-Powers, for ex, have been known to crack at the very narrow right rail section (thus resulting in the slightly raised wall on all newer production hi-powers).
(Not saying lowered-port 1911s will crack there).
A second advantage is there is less of a gap between barrel and slide, making it harder for the entry of foreign matter. Lower-port models have a nice size gap for dirt to get into....due to the barrel curving away from the slide there.