Out of curiosity, is the poor posture which comes with using a laptop (mainly over extended periods of time) something you actively think about?
This is the main reason why although I love my MacBook M1 Air keyboard and screen, I still use an external monitor and keyboard for the majority of my work.
Honestly don't think too much about it... probably I should care more. Just tend to change places regularly and run/swim daily.
Also, I keep quite a large font to be able to be further away from the screen and having a small view into the codebase forces to know it better. (vscode fullscreen of course with clock/battery in status line, hidden dock)
Working flawlessly since day 1.