I doubt you’re going to get any more love here than you did on Reddit:
https://www.reddit.com/r/delta/comme...eather_waiver/
https://www.reddit.com/r/DeltaAirlin...eather_waiver/
You did leave out the part about trying to do a “same day change” on Reddit though. And yes, unless you’re a Gold Medallion or higher, you have to pay a fee to make a confirmed change.
You’re not entitled to anything more than what you received - rebooking on the next available flight.