Banks have like 10% or even less the dollars that they are supposed to be holding, but still are doing all fine.
Personally I don't think these tether conspiracy theories were ever true. Maybe they aren't 1:1 backed, but they have always been financially well off enough to keep the company running. And after the interest rates went up, they are probably making a killing. Typical bank has minimal reserves compared to them, and everyone is fine with that.
