A few things:
1. If you want to suggest you are doing this as part of an attempt to avoid meritless litigation, you really should give concrete examples of that happening. Otherwise, it comes off as a smoke screen.
2. The assertion is that if widely adopted, it would avoid lots of meritless litigation. This is a theoretically possible outcome. Here's another theoretically possible outcome of wide adoption of this kind of very broad termination language: Facebook is able to use other people's technology at will because nobody can afford to not use their stuff, and no startup that they decide to take technology from, and say "no more facebook/react/etc for you" could realistically launch an effective lawsuit before they died. Assume for a second you think Facebook is not likely to do this. If widely adopted, someone will do it. Nobody should have to worry about this possibility when considering whether to adopt particular open source software.
(there are other theoretical outcomes, good and bad).
It's also worth pointing out: None of this is a new discussion or argument. All of the current revisions of the major licenses (Apache v2, GPLv3) went through arguments about whether to use these kinds of broader termination clauses (though not quite as one sided and company focused), and ultimately decided not to, for (IMHO good) reasons. I'm a bit surprised this isn't mentioned or discussed anywhere.
These kinds of clauses are not a uniform net positive, they are fairly bimodal.