I'm using an Alienware 34 QD-OLED Gaming Monitor for both work and gaming. Work wise, I'm using a Mac with the Rectangle app to set my window layout. I'm able to get 3 windows, although the left and right windows are a little more narrow compared to the centre window. I typically have my browser or vscode in the centre, and a terminal and Obsidian at the sides, which works well for me. If you're going for 43" at a minimum, I can't see why you would have an issue with this. On some of my workspaces, I also like to have a window that is centre aligned, with the desktop showing at the sides, for a less cluttered look.
The only thing I do miss is 'zen mode' when reading online articles. Going full screen and removing all task/menu bars doesn't always work if the website left aligns everything, but it's really not a show stopper.
which type of articles do you usually read, I ask because I was hoping to integrate articles and zen mode in my app - unlace.app, because I feel the same on my ultrawide
The only thing I do miss is 'zen mode' when reading online articles. Going full screen and removing all task/menu bars doesn't always work if the website left aligns everything, but it's really not a show stopper.