Fantastic to be holding 5 offers @WarmAndco3y
Yes, presumably O & C making far less offers for 2021 entry, as a method of ensuring they have enough seats for bottoms to land on when the music stops this year, may cause many interviewees who didn't receive an offer to decide they want to try again next year.
The ripples of the 2020 algorithm/CAGSs debacle possibly spreading to 2022 entry too is certainly believable.
This year's Y13's have endured a more stressful and challenging scenario all round with schooling missed due to patchy distance learning provision in lockdown 1, an autumn of being in/out of school with bubbles bursting etc/worries over whether exams will be sat or what might be used to determine grades/having to compete with 19 year olds with grades in hand (and some better than expected). Add in the situation of far less Oxbridge offers being made partly to compensate for 2020's bulge intake/places already taken by those persuaded to defer to starting in 2021, partly because of concern over the greatly increased likelihood of the offer holders then making the grade offers as there may be no formal independent exams to perform the task of whittling down numbers at that final stage and you can see why some applicants might be keen to write this year off and try again in the hope that next year's whole UCAS process will resemble something closer to a pre-pandemic year.