5) Like tether they are solvent despite all the people screaming for an audit
Right, but tether isn’t solvent either
The comment said they are solvent. Not that they might be. Given the present facts and circumstances, that’s unfounded. (EDIT: Never mind.)
The comment said the fifth possibility is that they are solvent.
I do not believe this is sufficiently well-proven to be something we can take as a given.