Taking The Train From Union Station To Disneyland Is Frustrating

I've taken Metrolink to Disneyland quite a few times at this point and, while the trip from LA Union Station to ARTIC is nice, ARTIC is a sh**show. There are no posted schedules for the ART shuttle to Disneyland, so you have to depend on the A-Way WeGo app. Lead times between shuttles are 50 minutes. Fine. But was checking the app yesterday morning and the arrival time would jump up by 10 minutes every time. Finally, after waiting almost an hour with no shuttle anywhere nearby, I bit the bullet and called a Lyft. Anaheim built a huge, gorgeous train station but they don't know how to run it.