What do you think the boom is? Cohen went to jail because the letter was proven to be a lie - he was reimbursed by Trump. Yes, it discredits Cohen, but it implicates Trump (not in a crime, but in the hush money a scheme).
If you believe the word of a convicted perjurer.
But in a February 8, 2018 letter to the Federal Election Commission (FEC), Cohen’s attorney Stephen Ryan wrote: ‘Mr. Cohen used his own personal funds’, and that ‘Neither the Trump Organization nor the Trump campaign was a party to the transaction with Ms. Clifford, and neither reimbursed Mr. Cohen for the payment directly or indirectly.’
If you don’t see the pure bullshit happening here, then I don’t know how to explain it to you.
but did Trump know what he was reimbursing him for or did Cohen just bill it as other legal services.