WSL is pretty good these days. Dual boot with Windows is still a pretty risky move with how easily Windows will overwrite your boot loader. I usually recommend you pick one os or the other rather than dual boot, so I’m in favor of WSL or virtualbox. Personally, I have never cared for needing to reboot just to switch operating systems. I tend to stick with one and the second one does nothing but take up disk partition space.
WSL lets you run both simultaneously without rebooting. Virtualbox lets you do the same with extra setup. Virtualbox makes it easier to do GUI setups than WSL does, and the network configuration is a little more obvious.
The best option is to get a second machine so you can run both. If that’s not an option, virtualbox is the better choice for learning. If you just want a Linux environment on your existing setup (similar to using a Mac) then WSL is usually good enough
The article is mostly about his impact on climate change efforts. You can certainly ignore it if you want, because there’s a lot of anxiety to be had over it.
He most definitely would screw up the little things we are trying to do, but I’m not convinced what we’re doing is nearly enough, so I suspect it won’t have the impact this article claims.