Games aren't the only reason to have dual boot.

I for one use quite a few processes where part of them are best done with one OS, then the other part with another OS. In my case, I need the access to multiple OS's.

And it isn't a hassle. It takes 3~4 minutes top to turn one OS off and start the other one. And if you're going from your secondary OS to your main OS and the dual boot menu is set to start the main OS after X time, you can set the PC to restart and go do something else while the computer do its thing.

And if it's still too much of a hassle for you and you have spare RAM, just set up a virtual machine with your secondary OS. Linux images for virtual machines, for example, are pretty easy to find. Just mind virtual machines have some limitations a full OS install doesn't (like some Win10 video drivers not working properly in virtual machines).

So I gather the reason Linux people are mad at NVIDIA is because NVIDIA wants proprietary drivers or something, whereas Linux is open source. What does this end up meaning for the player though? Is there any serious problem for them if they have an RTX 3070 and want to try using Linux? Will it simply not work?

You can use a nVIDIA GPU on Linux with performances similar to the same GPU on Windows, as long as you use nVIDIA-provided drivers. Due to a lack of cooperation from nVIDIA, the open-source drivers for their GPU has very poor performances, so if you do not want to use the nVIDIA-provided one you would be better with some integrated Intel chipset instead.

Of course, on Windows you don’t ask yourself this question: there are no open-source drivers at all.

HEEEYYY, you actually can post more than 5 words followed by a question mark?

This may be a touchy subject to you :P

and they still work wonderfully :P
open source is so overhyped

That's if you have a speedy SSD, if anyone is using Spinning Rust, the system with halt for sometimes a few minutes, even the mouse point will not move. Gues what's going on my head anytime anyone asks to upgrade to Win10... (is not an upgrade, is a excuse to buy a new computer because the old one will be unusable)

sure sure :P more lies pls

As long as one is willing to use proprietary drivers, there shouldn't be any issue. You can do as you please, in this case install the drivers if needed. However, some distros come bundled with the necessary drivers, such as Pop OS or Manjaro, so everything should work from the get go, without taking any extra steps.
Even if you need to install the Nvidia drivers (say you want to use another distribution that does not offer them by default), the process is straightforward, nothing out of the ordinary.

Yes.

There are some qwirks but nothing major if you don't change hardware often. Installed nVidia drivers may cause conflicts with other GPU's being used, not true with Intel and AMD, but it's easy to solve, just run a couple of commands to purge the drivers. (this is the same as in Windows)

Are you sure about that?

"(is not an upgrade, is a excuse to buy a new computer because the old one will be unusable) " about this?
yeah pretty sure it wont be unusable

Yes.

That’s the main reason, but not the only one ;)

And if you need both apps that don't run on linux and apps that require linux (and, for sake of argument, won't work in a VM or WSL), then what?

what app is like that?