4gb is acceptable. Some people just want a phone with a keyboard and bugger screen. Depends on the use case tho.

In Singapore with clean tap water

Then buy a laptop with Linux preinstalled! The popular OEM usually only offer windows laptops but with a simple google search u can find some Linux laptops and nothing is stopping you from installing Linux on that windows laptop. (Are they starting to oem lock like some androids?

Just don't use windows. Noones forcing u to use that thing.