are they saying that the ECOA gives the FTC the power to challenge companies that discriminate by not giving credit to minorities, but not the power to challenge companies that discriminate by giving bad credit terms to minorities?

Probably, yeah. It’s clear that they rely on their voters not paying attention to what they say and do.

The corporations and industries they ACTUALLY work for don’t care as long as they avoid or at least delay accountability for them, after all, so they have no incentive to even TRY to make sense.