It depends on of you care about outcomes or blame. It’s easy to say “you use your phone more than me, you should just use it less” which is completely ineffect

It depends on of you care about outcomes or blame. It’s easy to say “you use your phone more than me, you should just use it less” which is completely ineffective at anything except making the person feel inadequate and hopeless. Suggesting how to use a phone less would be far more constructive but also more difficult because it requires engagement rather than drive by commenting. Telling someone “you should be more responsible” is an ineffective way to get them to act responsibly.