when i take out my bottle filled up high with gasoline
Everyone seems to think it's so simple: either you're hurt by something generally considered hurtful, or you're pretending not to be. For Valdi, it's more that he has a very specific set of things that are important to him, and while he's always...what's the word, empathetic? to things bothering other people, it really does take a lot to get him down. Well, not a lot, but enough of something specific.
Unfortunately for him, Alexandria is determined to find that weak spot whether by careful inspection or brute force - whichever comes first.
He won't budge, though.
Call it...stress testing.