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I'd say that was a bit of a knee-jerk reaction.
As a hoster myself, I have had to deal with insecure scripts causing a site or two getting "hacked", and in the worst case, the site was temporarily disabled while the hole was plugged.
Personally, I'd not delete content, at least without some sort of warning. If it was the script itself, then it would have been disabled, rather than deleted.
But yes, using any script(s) in any language always runs a risk when compared to a static site.