There is no indication that they can actually acquire the clear text of an E2EE communicatiom. without one of the ends being complicit in the process. There is no evidence of the fraud you refer to.

That doesn’t mean they are telling the truth, merely that they haven’t been proven to have lied. They could release their source code tomorrow. That code could prove you are correct and they are liars. That code could prove that they are correct, and you were wrong.

We don’t have to resort to unfounded claims to justify criticism here. Proving their claims to be unverifiable is more damning than failing to prove they are committing fraud.