@wholemilk
>he/she will be the "weird" kid w/o one.
Social normalization of anything is a normal part of life, it usually is organic and is often harmless as it's common group sense that selects it as harmful or not.
The issue strives when inorganic grouthink and normalization is created, which was possible due to illiteracy in this case. And smartphones are on of the recent inorganic trends that appeared out of thing air due to corporate madness.

What do then ? You can take many examples of inorganic trends like trans kids and go with it until they realize how you abused them later if they didn't die.

In this case for mobile phone computers many solutions exists, one is to not let your kid have any, another could be banning proprietary software/saass, another could be mandatory training or both.
One thing is for sure is that the madness must stop.