DAS holders wait the time estimated for standby and again in the LL. They do not get front-of-line access.
Disney used to do the red tag lanyards consistently to get accurate times. They don't anymore. Haven't seen a red lanyard since reopening -- has anyone else?
Disney has an actual incentive to inflate the standby times to push G+ and ILL sales. They should be honest on the standby times with true data with those timed red tags.
Thrill data reflects the consistently lower queue times too. We use that to guide our next rides more now since the app really doesn't reflect times well anymore.