You can still write exchange biz without taking the Advanced Subsidy....if they are due any subsidy they will just deduct it from the tax bill at years end.
Sure, tell someone making $25K that they need to pay at least 25% of their gross income for health insurance and that they should wait until the end of the year to get a refund from the IRS and not buy groceries for the next 12 months with the money they will eventually get back unless their income goes up.
You really have no clue, did you tell any of your thousands of ACA clients to do that?