Product managers want a faster, smaller install. It means less cancelled/failed installs. It's a metric they'd love to optimize for.
Why are you bashing PM's?
At the end of the day, if delivering a new feature on time adds another 5 MB, it is what it is. Pretty useless to try to assign blame to either devs or PM's, or portray them as somehow opposing teams. They both want success for the business.
I'm not "bashing" anyone, and I wouldn't say the person who I replied to was "bashing" developers, either.
I agree that both developers and product managers want success for the business.
I probably should have said product owner here rather than product manager. I only meant to call attention to the fact that it's often others in an organization beyond the developers making decisions around whether to optimize for this sort of thing.
On average, more technically-minded folks are more likely to want to optimize for technical things like app install size where the business impact can be a bit more abstract and difficult to measure, particularly when compared to folks like product managers who are likely to have their individual performance evaluated by even less technical stakeholders on their ability to quantify the impact of whatever ends up getting shipped.
Again, I'm generalizing here - of course there are highly thoughtful and competent folks capable of balancing competing priorities across domains in any type of role.
s/devs/product managers