You're questioning someone's ability to observe that there's glass over a painting when they stated that's one of the reasons they picked those paintings?

Not really.

They knew the paintings would be fine. There wasn't an "attempt" to destroy them.

What art did they attempt to destroy? Both paintings were protected by glass and unharmed.

And if it backfires on them it backfires on everyone cause we're all gonna suffer.

So, show them the proper way to do it if you think they're messing up.