Ditto, it's something I rarely notice and that never bothers me. I game on Windows, use Linux desktops occasionally, and work on macOS mostly. Former mainly-Linux user, too. Whatever the defaults are for Mac cursors don't bother me a bit. In fact the only system customization I really do with a new Mac is to install Spectacle, and then use its defaults without configuring it further. That's about it. Oh, and set caps lock to an extra ctrl, which you can do through the normal Mac settings panel with a few clicks. Otherwise, I don't even know what I'd want to customize, behavior-wise.