I was really excited for this, I want to buy it and am willing to compromise for 1st generation hardware. But no NFC means it impacts my life substantially, from payments to public transport. I hope they reconsider the lack of NFC for the next generation.
This is based on a cursory examination of [1], so I may be off-base. But Xen appears to rely on the host for many things that can be, and often are, hardware accelerated in KVM. Searching for CONFIG_XEN_PVHVM, it doesn't appear to cover much.
In general: it gives a process a huge amount of flexibility in terms of how it sets up its own address space, communicates with other processes, and in how it can communicate with the kernel.
Fair enough. You know you can pay for some of those services and not get served ads. You can also disable ad targeting and history in various apps. This, understandably, disables some features due to a lack of information to operate, but it may be much more palatable to you. It may be worth considering some of these options, if you don't like targeted advertising, which exists to serve you more apt ads.
What makes you say it's being killed?