I think it can be reasonably inferred that joining a cult to summon an eldritch abomination involves some form of metaphysical change of the soul. In addition, cults almost inevitably involve murder or assault when gaining new converts, and the act of summoning an eldritch abomination to destroy the station will fall under attempted murder or grand sabotage.
If you have physical evidence, witnesses, etc. you absolutely can prove it. And yeah, you shouldn’t arrest someone without evidence, but having the ‘enemy of the corp’ charge exist doesn’t really provide any evidence either, ever since ling tests were removed. Even if it did, it’s boring and lame to arrest/execute someone because “they haven’t done anything we can prove, but they are an enemy of the corp, so lets do it anyways”.
True, it is not a weapon, I do think that particular charge under space law needs a revision if enemy of the corp is removed, but the suit is absolutely still contraband. The syndicate is an enemy of the corp, even if that particular legal charge is removed.
A strike team sent expressly to detonate the on-station nuclear warhead is an immediate threat to the station. If you recognize someone as a nukie, they are a threat, regardless of any weaponry or harm they have or have not committed.
We’re not punishing them for a crime here, we’re using Space Law’s use of lethal force guidelines and applying them. In-universe, the crew has a vague idea that there are threats out there, and security would logically have a better idea than the average crewmember. They know wizards are bad news already.
I would argue that the very act of colluding to achieve some goal without authorization meets the criteria for subversion, but regardless, we’re engaging in creative legal interpretations to demonstrate why the Enemy of the Corp charge is not necessary for security to deal with antags.
The Enemy of the Corp charge does nothing to alleviate shitsec, and living with the fact that some antags get away should be encouraged. You’re trying to create an interesting story, not constantly ensure a perfectly safe station all the time.
We can make a distinction between enemy of the corp as a legal charge and enemy of the corp as a concept.