[szmarczak]

How does your question relate to "I so want to run my os"? You're assuming that people who want to run custom OS do only so to increase the lifespan.

On Android that's definitely the case (more people do so to increase the lifespan than to hack apps), but the desktop market progresses slower than mobile in terms of software. I was running my Xiaomi Mi 6 for 7 years thanks to LineageOS, and it would've been longer if I hadn't dropped it the second time (the screen cracked, battery was 60% and repair wasn't worth it). Now I'm running Nothing Phone 2 am switching to LineageOS once the support goes out. Now try to do the same with Samsung. You can't. The bootloader is locked down since OneUI 8.0 and you can't do a thing about it, gotta buy a new one after security updates are gone.

Phones are very cheap now (can get more expensive soon tho). For $200 you can get a very decent Android (Snapdragon 7s gen2, 8GB RAM, 256GB storage + other very nice stuff such as OIS, 144Hz etc.), buy a wireless display or cast to TV and use it as a workstation (obviously you need a wireless keyboard and a mouse). Office work? Web coding? Sure. Did that myself.

Since we are focusing on MacBooks now...

> People are still buying new MacBooks instead of using them indefinitely.

I'm not hearing anyone with M1 or above switching to a new Mac yearly. People who switched to M-series were using their MacBooks for years.

It seems Apple is happy with having Linux as an unofficial alternative on Macs.

> How did installing windows increase the lifespan of a MacBook?

Via Windows Updates? And Windows software doesn't usually require you to upgrade to the newest version possible (however many games started to require W11)? Try to install new Xcode on an older version of macOS, good luck.