They're trying to maintain the dominance of Trump on the GOP and that's the only thing they're trying to do here.
Also convince people to give Trump money (that they think will help him win a second term but actually goes to pay off his debt).
Just to be completely transparent, that is to pay for debt from the campaign. Not for personal debt, business debt, or anything along those lines. Very common for campaigns to use debt as a way to leverage themselves, though the lack of transparency when it comes to 'election fraud security payments' being used to pay mostly campaign debt is the bullshit part here.
Not sure what the split is in regards to how much is servicing debt and how much is going to the lawyers, but yeah.
Trying to ensure that no one can try to cut up your argument on some BS technical point.