I think you do your argument a disservice by using that particular example. If you're going to imply some lives were simply uneconomical to save, and when challenged say that you aren't familiar enough with the matter to discuss what else could've been done, it just comes off callous. I'm not left with the impression you don't think the alarm system was necessary because you understand the tradeoffs.
The problem isn't that Texans are valuing their lives too much and insisting on too many safeguards. The problem is that the safeguards are insufficient.