Here’s Autumn Chenn’s attempt at extrapolating the 2021 IFComp results from the period 2018-2020: IFComp score predictions: 2018-2021 - Competitions / IFComp - The Interactive Fiction Community Forum (intfiction.org)
The thread discusses it at some length. The 30th post concludes that the prediction correlates quite nicely with the actual results. All the numbers are still there, and the predictions for 2022 have been linked to somewhere above in this thread.
Fascinating number-juggling