No, it’s usable by any income level. You’re thinking of Free File, which lets lower income users use TurboTax and other products for free.
https://www.irs.gov/e-file-providers/free-file-fillable-form...
> Free File Fillable Forms is the only IRS Free File option available for taxpayers whose income (AGI) is greater than $72,000. Taxpayers whose income is $72,000 or less qualify for IRS Free File partner offers, which can guide you through the preparation and filing of your tax return, and may include state tax filing.