Longtime lurker, new poster.
E190 FO and a frequent flyer in US airspace.
As "native non-native" English speaker, I have to say that ATC was almost at fault as the Eva pilots. Evidently, these chaps are unfamiliar with rwy 7 LAX departures (very unusual indeed) but instructions were really confusing. That, and somewhat poor navigation (I don't want to nail the pilots, since no one is clean in this job, regardless of experience).
I really wish US ATC stick MORE to clear and concise instructions, ICAO phraseology, and engrave in their minds that they are talking to NON ENGLISH speakers from every corner of the world.
Giving this confused crew a simple "fly HDG 180 to the right NOW, expedite turn" would have finished the ordeal without the mountain flyover.
But......I have listened to confused Air New Zealand and Lufthansa crews in IAH........
So it is really someting about US ATC...