Apparently it needs to be said here too. No one who has
DAS and enters another line is abusing DAS. This is from the DAS FAQ page for WDW, screenshot a few minutes ago.
View attachment 850044
People may be able to wait in a 15-20 mins line, but not a 45 min+ one. They may be able to wait in outdoor queues (where sound dissipates more easily) longer than they can wait in indoor queues). Regardless of reason, Disney explicitly allows - if not encourages, given this is their FAQ - using DAS in this manner.