The drawback could be as simple as “higher cost to manufacture” or “higher risk of consumers using incorrect/third party batteries”. I’d argue the latter is a real problem, but everyone might not agree.
As for parent comment it was about an android phone. I never used or owned one so can’t comment.
This wouldn’t be an issue if we had some kind of standards around batteries for cellphones rather than making unique batteries for every single model.
If you could just buy a “Type B” format phone battery for a phone this would eliminate the issue. It would be similar to the charger market, where different manufacturers could compete. This is _toward_ the market economics that capitalists so love, unless they’re benefiting from market capture of proprietary parts.
One-off designs are wasteful and drive up costs and drive down quality.
> drive down quality.
How so?
There are ways to make a phone stiff, such as a rigid metal shell around the battery. Or glue.