I'm inclined to agree. I lost my grandfathers years ago, but I've gone through this thought exercise a lot since this all kicked off:

Assuming they don't already know: would I shelter a 90+ year old veteran from home-grown horrors that they'll never live to see resolved, or let them shuffle off this mortal coil blissfully ignorant?

Honestly, this is a situation where the truth simply won't do any good. I'd probably just not tell them and keep those soaps and old movies on repeat.