That's where tool user, AKA "The Developer" experiences the performance. If the autocomplete comes up fast, you are a happy developer, if your scripts finish running instantly on every save, you are a happy developer. If you click and it runs, you are a happy developer. If you think about it, Docker itself is about that comfort of not having to deal with the tool setup every time. On Apple dev technology that's the default without Docker. Search for Xcode on AppStore, click download, click open once it's downloaded, write your Swift code that can do UI and backend , click run and it runs. Sometimes autocomplete stops working but you just close Xcode and open it again and it works :)

There's nothing you can't do on 2015 Macbook Air that can be done on a fresh high end Macbook Pro. The difference comes from the comfort of being snappy and people pay multiple times more for that snappiness.