The equivalent of two full time employees could be 10 people with 20% of their time. I suspect there are a lot of patches submitted to python that were developed by someone being paid while they did the work that isn’t accounted for in the 1 actual full-time plus 5 20% time people.

IOW, paying for 1 additional named person to work ~2000 hours in 2021 will almost surely not be a net increase of 50% of capacity.