If tether manages to make people believe that its demise would derail the regular economy, and get bailed to keep their peg, then they’ve definitely screwed everyone over.
Given what we saw in 2009, nothing could more-qualify them as a "real financial institution" than being bailed out as "Too Big to Fail"
Solidcoins are great deal for issuers if solidcoins. At any point they can just take their money and run. And it would be a smart choice given to what happened to money that tried to keep UST peg.