That’s a stretched inference if your only source is the text you quoted.
Step 1: From your 2019 or 2020 IRS Form 1040, Schedule C, you may elect
to use either your line 31 net profit amount or your line 7 gross income
amount. (If you are using 2020 to calculate payroll costs and have not yet
filed a 2020 return, fill it out and compute the value.) If this amount is over
$100,000, reduce it to $100,000. If both your net profit and gross income are
zero or less, you are not eligible for a PPP loan