Based on the phrasing of this, I'm not sure if it's meant to be taken sarcastically or not. Apologies if you did mean it that way, because I'll respond seriously:

- Advances are mostly software.

- Massive quantities of e-waste (and plastic waste via cases, screen protectors, etc).

- Perverse incentives by companies to not properly support the user experience on older devices.

- Tons of money spent pointlessly.