(notwithstanding the 'expect filed altitude 10 minutes after departure)
But that's the key here, innit?
If your average groundspeed from runway 25R to SHEAD was 250 knots, it would take you almost right at 10 minutes to get to SHEAD. Considering you've got an extra 45 NM to get from SHEAD to DBIGE (the AoA FL210, which also happens to be the MEA between SHEAD and DBIGE)... the FL190 is a non-issue; either you're with CTR and they've either climbed you higher, canceled the restriction, or vectored you for holding... or you aren't with CTR because this is VATSIM and CTR isn't always online, in which case you execute the lost comms procedure of climbing to your filed altitude.