Mac OS has changed a lot in the 15 years since that OS came out. 10.6 was the last OS where the only way to resize the window was dragging from the bottom right corner.

Some things take some getting used to. Apple intends for you to kinda “pile” windows on top of each other, while windows tends to encourage just maximizing them. Mac OS’s green button also defaults to going exclusive full screen and hides the bottom bar, while windows just makes it as big as possible without hiding the bottom bar. Linux distros by default tend to lean towards a windows approach, but obviously you can chose from any of 10 billion dekstops and window managers.

Also the new settings app sucks. I don’t think even the most die hard Mac OS users like Apple changing it around and making it worse for no good reason.