Well, there has been wholesale change to pretty much every supporting system in TrueOS over the past little while: boot manager, boot loader, init system, desktop, source tree. The development team needs a chance to get all the new core features working and push development forward. If we (the community) want Hyper-V support then I guess we (the community) just have to drill in and fix it.
LSW is super awesome. It’s based on Pico Processes and a shimming layer between the a userland and a kernel to mimic Linux kernel calls. It’s quite brilliant. It’s similar to what Blackberry did with QNX to get Android apps to run. Also similar to libHybris that was used by SailfishOS to work on a stock Linux kernel (back in the day before it was merged). However, it’s only good for Linux kernel system calls, and any other kernel needs to be shimmed for it to work.
As cool as it is, it doesn’t replace virtualisation. The ability to mimic hardware and encapsulate a full compute system will always be necessary, but now Linux users have more options on Windows.