How Posts on Reddit tackles App Size in mobile performance

Why is there so much obsession on app size reduction?

There is a lot of obsession with app size reduction. This usually is tracked as a metric, compared with peers and I see teams work hard for months to squeeze it up to the last bit.

Why are app sizes so big now?

Since this subreddit does not allow image galleries, the app sizes from the App Store are typed below. Links go to App Store. There's more than just this list.