So here's a fun thought experiment. A 20yo non-student who boomeranged back to Mom & Dad's house made $2K at a McJob in 2020 and $10K of unemployment. Fails the QC test because not a student, fails the QR test but only because of gross income. No tax because TI = $0 after taking the standard deduction. He's never filed a return before so no EIPs, now he files a 2020 return and gets $1,800 RRC.
Yay, now $10K of unemployment is excluded from gross income, thank you Congress. But now little Johnny only has $2K of income and qualifies as a dependent of Mom & Dad. The law of unintended consequences says that Johnny loses his $1,800 RRC. Hope he didn't spend it already.