-Worm piles cannot be destroyed by most damage types (only incendiary and anti-annelid)
Annelid worm: Dies to wrench and bullets and harsh language.
Smaller, weaker, immobile worms: INVULNERABLE
You sure you thought this through?
Worm piles are such a non-threat that the only reason SCP makes them killable is because they
should be killable. As worm research says, "they're so easily killed it hardly matters".
So tacking on specific requirements to kill worm piles doesn't make lore sense
and misses the point of them, which is that they're only a threat when not noticed. Even in unmodded SCP I expect most people will rarely if ever bother shooting them, because just walking around them is easy and costs nothing. They're so trivial a threat that they're, on average, worth less than a bullet. Raising their destruction requirement above the level of a bullet eliminates this calculus, pushing their destruction completely into "not worth it, ever" territory. Boring.