It will crash if you max out your ram and have 0 swap, in the same way your windows system will crash if you have 0 page file.

In recent years its become really trendy to just not use swap on linux and it pisses me off to no end. Its a horrible configuration all to save like 1% of your diskspace.

edit: Also, most distros out of the box do use significantly less than windows. My debian testing xfce install that I just did here a few days ago uses 700mb on a cold boot.

I mean

If you try to open modern JS bloated websites that reinvent scrolling in multiple tabs dont expect to have good performance

what is this? If something, it is low RAM that Linux handles extremely well ?!?