There are some real bean counters in this hobby.
Lot of neck beards too. Are you implying that people who have math skills can also apply those skills to brewing?
There are extreme diminishing returns after you've purged 7 or 8 times.
Not true. Reality is far more complex than you've mistakenly simplified it to.
It's your beer and you are perfectly within your right to ferment in a bucket, leave it on the cake for a month, rack it into a keg with the lid wide open, force carbonate it from a tank, and think whatever you want about your creation.
But the reality is if you do even a single one of the above items you're going to get oxidized beer. Is it going to be bad beer? Probably not undrinkable. But it is going to be oxidized and it will be different than a non-oxidized beer.
If you want to split hairs over the .0000002 percent oxygen in your keg then by all means closed transfer into purged kegs, or purge your kegs 2000 times if you wish. Maybe you can even figure out how to brew in a complete vacuum.
Well now you're just making shiat up to argue. Purging 2000 times is a waste. All you need is a single water purge cycle. The idea is REALLY simple: you fill the keg completely full of water to displace all atmospheric air, then back fill it with CO2 from a tank to push the water out. Incredibly simple, fast and WAY more efficient use of CO2. Probably even less than 7-8 purges at 30 psi.