Well,  think one of the biggest problem i have with microsoft windows is the closed kernel, missing support in the dash aplication under powershell and the software coming with it (pls delete microsoft word cockies, this would make the world a better place). Other problems are the missing non-guy mode and no default package manager. Also bat and exe are a wrack in comparison to the posibilitys under linux. Btw WSL is already availible since 2016. Now to the "new" feature itself. Its far away from something that is usable. To use virtual box is the way to go cause there you havn't any problems with commands WSL(2) doesnt support. A nice step would be if windows publishes a official tool to open ext4. But this could of course make problems with the Security of your data. I'm using WSL now for two years and need to say that it feels more like an linux kernel v.2 with no libaries than a modern one. No rights to open partitions, the folder is missing and in general most of system near functions doesnt work cause of missing directorys / files. (i want windows to go away. Its even worse than linux and linux itself has big problems with bugs (if you want something bug-free use FreeRTOS))