I agree, you could do this using more traditional methods, I just think leveraging a nice printing process could save some time/effort. Some other challenges that printing solves:

1. you can set the width of the jig to match your pogo pin spring "active region" easily.

2. You can make cutouts for the board and other features (USB-C + USB-C connectors in my case).

I admit, a Form 2 is an expensive perk. But there are much more affordable routes: https://dirtypcbs.com/store/print3d https://dirtypcbs.com/store/lasercut

I.e. when you order PCBs, you can order a $5 SLA jig :)