I haven't given the article the dedicated read that I intend to yet but my impression is that he does not expect to address all 133 items and it does not matter.

As someone who has compulsively accumulated lengthy to-do lists and buckled beneath the phantom of hopes and intentions of varying importance and ambition I find it enlightening that the possibility of completing a task other than those that are important enough to not have to write down to begin with can be measured by their meaningfulness and address according to this measure.

I gather that the .0050% of information that I consume daily is what is of the greatest priority and the remaining 99.995% is synthesized and iterated over the next day until it reemerges as something important. I suspect that Wiegley completes on average about 5 important things each day. This sounds like a solid baseline.

If it's the Org Mode agenda view in anything close to its default configuration, those 133 items will contain not just tasks scheduled for today, but also any incomplete tasks that were either scheduled for time before today, are past deadline, or have a deadline coming in the next 7 days (IIRC, maybe it's 14).

This is to say, if you don't keep on top of current work, the agenda view quickly turns into an ever growing wall of shame.

I have a pretty weird love-hate relationship with it because of that.

It entirely depends on which tasks you have and where they are coming from. Not every task has to some unique hour-long work. People who are using routines, pre-defined lists or elaborated project-planning, usually have very detailed and long daily lists full of small tasks, each in the range of some second to minutes of work.

Maybe the 133 items are 120 items of one minute work each, and the rest are conditional or optional task you will not do that day.

Yes but I use OmniFocus for habit learning or reminding myself to take eg meds. Taking 7 meds or supplements in 20 seconds is doable :)