I guess it really depends on your knowledge of the tools.

Gnu/Linux is in fact an umbrella term that includes a ton of different distributions, all with their pros and cons. Using dual-monitor with Ubuntu or an Ubuntu based distros is as easy as in Windows, particularly if you install the OS with a built-in Desktop Environment like Gnome or KDE.

The only issue you could have with Linux is related to battery life, especially if the hardware is not explicitly build for Linux.

Overall the issues of Windows are related to security and personalization. Windows really suchs in that regards.

Ps If you are used to MacOs systems, you are better off using linux because you'll find a lot of similarities in the workflow.