Having the qualification be based on AGI is an absurd usability problem for people on the margin. AGI is the outcome of doing your tax filing, not the input!
Yes, presumably that is intentional by the tax industry lobbyists. You Google "what is my agi" and the first result is from TurboTax, you try to read that but keep getting distracted by all the big buttons that say FREE, so you click one of those and end up getting conned into paying Intuit.