Most of the issues you described, such as carrier registration issues, are just as likely with eSim as they were with physical SIM cards. The difference is that you can't swap out the eSim physically, which was a pretty reliable way of getting around misconfiguration. This isn't really an indictment of eSim as a technology, but the reality is that Telco's are incredibly slow and inefficient, and by removing a workaround for their incompetence, it can make the problem worse.