I think any such action should be kept entirely separate from 50501, as this is a protest movement and it is in its interest to maintain an appeal that is as wide as possible.
Discussion of sabotage in open forums is of course also not a good idea, as it attracts bad agents like moths to fire.
There's clearly some interest out there - the declassified CIA sabotage guide went viral. It's just rarely a good idea to discuss this in public forums, even anonymously.
For discussion of resistance more broadly beyond the scope of 50501, but nevertheless in a public forum, !resist@fedia.io is a good option.
That said, looking for ways to hinder the efficiency of the federal government in certain functions borders on a moral obligation at this point. Even small acts can make a big difference.