The vast majority of people don't care about the app size unless it's blown out of proportion.

If Apple started to charge for bandwidth transparently at market price, that would make a lot of difference. But right now if an app is within the Over-the-Air limit of 100MB, developers don't really care.

Look at Apple's own best practices. No incremental updates, zip compression when brotli and zstd already there, forcing its own pngcrush which just hurts compression without any real benefits for loading time and now it's a mandatory for Asset Catalogs and App Thinning.