[umvi]

Would you like it if I saw some code you were writing over your shoulder and I started correcting you and giving you advice on how you should be coding it differently? Maybe, but more likely you would feel defensive depending on my tone and/or how you interpreted my tone.

[ggurface123]

There's a whole paradigm that centers around exactly this. It is called pair programming. It is quite popular.

[umvi]

Indeed, and believe it or not, it is quite popular for 2 people to co-operatively raise kids as well. It's called "parenting".

Sarcasm aside, I think the main difference between pair programming and OP's scenario is that usually it's unsolicited advice that is unwelcome. Pair programming is usually consensual.