The trust statement states that they are responding to comments made in the press and on social media. There have been comments, even on here, suggesting the trust want to own the club/are part of the bid, so they have tried to address that, hence why i'm surprised that you ask "why now". It's obvious, it says so in their statement.
The comments made by Overson and Seppala suggested/stated that Wasps were part funding the bid by Hoffmans team. That is the big topic over the last 48 hours. The trust have clarified that they have had meetings with Hoffman's team and nobody from Wasps were present, but also that they were not told who the consortium members were. The main thing is that they have not been, never have been a member of the consortium. I assume these are all points they have been accused of recently on social media.
They are addressing comments made on social media, not years ago, but now, as is obvious from their statement.
I agree they could have said more, especially distancing themselves from Wasps, but this to me was specifically aimed at flack they have taken about their "involvement" with Hoffman and Wasps. You're on social media, have you seen any of this?