Because you know the phone does nothing but video

I never once implied my situation is everyone's and spoke for my own experience.
But thank you for being so concerned about how I spend my own money
Further:
1) it's a self-employed business expense monthly
2) I make the monthly $45 payment in a typical month under 1 hour of work. Drop in the bucket for the benefits better and better phone has overall when time is literally money.
3) Related to 2), I run my business from it. I use my phone more than my laptop and do every email I do from it; and own no other extra tech I upgrade like a watch or ipad. It pays for itself many many times over; and again, time saved is literally money.
4) If battery life is advertised that is a worthwhile upgrade on its own regardless of camera. Never bought a phone for camera upgrades.
5) Incidentals- faster Face ID and wider angles, little better audio, little better display, little faster.