As stated elsewhere in this thread (and others?), but bears repeating: the recall is due to friction issues internal to the pump. Using a lubricity additive should not be required, but is
HIGHLY RECOMMENDED.
Some brands (and they include cetane boosts and injection cleaners, all recommended. (Again, by me.

)): Diesel Kleen, Amsoil, EDT Hot Shot. There are others.
Pick one, and use it!
1. I have no concerns about my pump imploding. I have religiously used lubricity additives and will continue to do so, even post-recall.
2. Despite the above, yes, I will have the pump replaced. Why wouldn't I? As stated, I will use my lubricity additive/cetane boost post-recall. (I've been using Diesels since 1983. I have nowhere near the experience of a big-rig driver, but I've owned/used ~10 Diesels, continuously, since 1983. Give me a little street cred.)
3. 6,000 mile road trip? No problem. Don't even worry about it at all...except when you're filling your tank and trying to find your lubricity additive.

4. If my recall gets delayed for years...I will not change how I operate my truck.
This all comes down to the ULSD fuels and how astringent they are.
YMMV. IMHO. Etc.
Edited to add: If I'm on a road-trip, and I'm going to go through just a few tanks of fuel, I don't worry about the additive. 6,000 miles? Up to you. But, beyond a few (3 or 4) tanks, yeah, I'll bring a jug of my additive and a funnel.