Well, I guess one small piece of good news with regard to this issue, even if it is a workaround, is that the Kill NVDA add-on has been updated for compatibility with NVDA 2021.1.
Brian - Windows 10, 64-Bit, Version 21H1, Build 19043
Yep. Discipline. Accountability. Joy. Fun. Responsibility.
That's what life is about. And in that order.
~ Liza Minnelli