Meeh, doesn’t really bother me 🤷. I usually just use the default settings in whatever DE in Linux (I usually use xfce, but I’ve switched when I felt like it, if I’m getting bored and wanna try something new 😂), or change a few font sizes here and there and all is good 🤷. Regarding Windows (I dual boot), I don’t really care that much to be honest, I rarely use it the past few years. I only use it for work and only when I have to do some things from home or when I need to use some obscure piece of software that just doesn’t work in Wine.
So… no, I don’t really see a reason to buy a bigger monitor. Actually, I haven’t bought a monitor for ages, like probably 20 years 😂, all of the ones I currently use are salvaged from one person or another - they wanna trade up, they give me their old monitor 😂. I don’t complain, they’re still usable for me 🤷.