I remember issues even on other EU releases. Servers being split doesn't mean they can't crash the launcher or anything...and the majority of people plays on english server anyways. It's not like NA has only one server...and they already had issues during the early access.
The NA CB at the beggining had even less players than EU, and it still had plenty of server issues, lag and so on...population didn't cause that back then. It's SoE...





