Yes you are correct and the (2020-Unqualified) applicant never received an ITA in 2020. For PGP IRCC 'DOES NOT FOLLOW A FCFS POLICY', emphasizing this point because, the (2020-Unqualified) applicant only GOT INTO THE POOL in 2020, IRCC has every right to not sent an ITA in 2020, which IRCC didnt and the selection criteria is a total grey area. Now in 2022 the said applicant is fully qualified and receives an ITA.
Same as applicants in Express Entry pool who redo IELTS and update their profile, gain more points under the same profile and receive ITA. So ideally that applicant would have never qualified for that ITA draw at the time he/she entered the pool.